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, 2^{212123112002123} 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".