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120102012121 = 7131319802331
BaseRepresentation
bin110111111011010100…
…0110100010011011001
3102111000010010100211011
41233312220310103121
53431432103341441
6131101334533521
711451145154560
oct1576650642331
9374003110734
10120102012121
1146a31500363
121b339b072a1
13b430383980
145b54adcbd7
1531cde06581
hex1bf6a344d9

120102012121 has 8 divisors (see below), whose sum is σ = 147817861184. Its totient is φ = 95025767760.

The previous prime is 120102012083. The next prime is 120102012157. The reversal of 120102012121 is 121210201021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120102012121 - 217 = 120101881049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (120102012161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659901075 + ... + 659901256.

It is an arithmetic number, because the mean of its divisors is an integer number (18477232648).

Almost surely, 2120102012121 is an apocalyptic number.

It is an amenable number.

120102012121 is a deficient number, since it is larger than the sum of its proper divisors (27715849063).

120102012121 is a wasteful number, since it uses less digits than its factorization.

120102012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319802351.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120102012121 its reverse (121210201021), we get a palindrome (241312213142).

The spelling of 120102012121 in words is "one hundred twenty billion, one hundred two million, twelve thousand, one hundred twenty-one".

Divisors: 1 7 13 91 1319802331 9238616317 17157430303 120102012121