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212123112002123 = 7103413984198443
BaseRepresentation
bin110000001110110011000010…
…101111010101001001001011
31000211001202211101122212020012
4300032303002233111021023
5210300411113133031443
62031052002401022135
762452250314146110
oct6016630257251113
91024052741585205
10212123112002123
11616529a7761553
121b95aa6902494b
13914917b803aaa
143a54b55d88907
15197cc20280118
hexc0ecc2bd524b

212123112002123 has 32 divisors (see below), whose sum is σ = 244897292390400. Its totient is φ = 179968367720736.

The previous prime is 212123112002071. The next prime is 212123112002147. The reversal of 212123112002123 is 321200211321212.

It is not a de Polignac number, because 212123112002123 - 214 = 212123111985739 is a prime.

It is a super-3 number, since 3×2121231120021233 (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212123112002023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25124135540 + ... + 25124143982.

It is an arithmetic number, because the mean of its divisors is an integer number (7653040387200).

Almost surely, 2212123112002123 is an apocalyptic number.

212123112002123 is a deficient number, since it is larger than the sum of its proper divisors (32774180388277).

212123112002123 is a wasteful number, since it uses less digits than its factorization.

212123112002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21111.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 212123112002123 its reverse (321200211321212), we get a palindrome (533323323323335).

The spelling of 212123112002123 in words is "two hundred twelve trillion, one hundred twenty-three billion, one hundred twelve million, two thousand, one hundred twenty-three".

Divisors: 1 7 103 721 4139 8419 8443 28973 58933 59101 426317 867157 869629 2984219 6070099 6087403 34846241 34945577 71081617 243923687 244619039 497571319 3589162823 3599394431 7321406551 25124139761 25195761017 51249845857 294206812763 2059447689341 30303301714589 212123112002123