123402231212102 has 32 divisors (see below), whose sum is σ = 193610420543232. Its totient is φ = 58936504090464.

The previous prime is 123402231212093. The next prime is 123402231212119. The reversal of 123402231212102 is 201212132204321.

It is a super-2 number, since 2×123402231212102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 42694778 + ... + 45493389.

It is an arithmetic number, because the mean of its divisors is an integer number (6050325641976).

Almost surely, 2^{123402231212102} is an apocalyptic number.

123402231212102 is a deficient number, since it is larger than the sum of its proper divisors (70208189331130).

123402231212102 is a wasteful number, since it uses less digits than its factorization.

123402231212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88188572.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 123402231212102 its reverse (201212132204321), we get a palindrome (324614363416423).

The spelling of 123402231212102 in words is "one hundred twenty-three trillion, four hundred two billion, two hundred thirty-one million, two hundred twelve thousand, one hundred two".