123402231212132 has 12 divisors (see below), whose sum is σ = 215954104747500. Its totient is φ = 61701058427136.

The previous prime is 123402231212131. The next prime is 123402231212153. The reversal of 123402231212132 is 231212132204321.

It can be written as a sum of positive squares in 2 ways, for example, as 76141226099236 + 47261005112896 = 8725894^2 + 6874664^2 .

It is a super-2 number, since 2×123402231212132² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123402231212095 and 123402231212104.

It is not an unprimeable number, because it can be changed into a prime (123402231212131) 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 3 ways as a sum of consecutive naturals, for example, 9240257 + ... + 18225992.

It is an arithmetic number, because the mean of its divisors is an integer number (17996175395625).

Almost surely, 2^{123402231212132} is an apocalyptic number.

It is an amenable number.

123402231212132 is a deficient number, since it is larger than the sum of its proper divisors (92551873535368).

123402231212132 is a wasteful number, since it uses less digits than its factorization.

123402231212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28589470 (or 28589468 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 123402231212132 its reverse (231212132204321), we get a palindrome (354614363416453).

The spelling of 123402231212132 in words is "one hundred twenty-three trillion, four hundred two billion, two hundred thirty-one million, two hundred twelve thousand, one hundred thirty-two".