123212122220312 has 32 divisors (see below), whose sum is σ = 239058144105600. Its totient is φ = 59473001606400.

The previous prime is 123212122220273. The next prime is 123212122220339. The reversal of 123212122220312 is 213022221212321.

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 7 ways as a sum of consecutive naturals, for example, 607261739 + ... + 607464602.

It is an arithmetic number, because the mean of its divisors is an integer number (7470567003300).

Almost surely, 2^{123212122220312} is an apocalyptic number.

It is an amenable number.

123212122220312 is a deficient number, since it is larger than the sum of its proper divisors (115846021885288).

123212122220312 is a wasteful number, since it uses less digits than its factorization.

123212122220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214726787 (or 1214726783 counting only the distinct ones).

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

Adding to 123212122220312 its reverse (213022221212321), we get a palindrome (336234343432633).

The spelling of 123212122220312 in words is "one hundred twenty-three trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, three hundred twelve".