123012312111212 has 24 divisors (see below), whose sum is σ = 215774436031392. Its totient is φ = 61362480787200.

The previous prime is 123012312111209. The next prime is 123012312111229. The reversal of 123012312111212 is 212111213210321.

It is a super-2 number, since 2×123012312111212² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65691137 + ... + 67537767.

It is an arithmetic number, because the mean of its divisors is an integer number (8990601501308).

Almost surely, 2^{123012312111212} is an apocalyptic number.

It is an amenable number.

123012312111212 is a deficient number, since it is larger than the sum of its proper divisors (92762123920180).

123012312111212 is a wasteful number, since it uses less digits than its factorization.

123012312111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885529 (or 1885527 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 123012312111212 its reverse (212111213210321), we get a palindrome (335123525321533).

The spelling of 123012312111212 in words is "one hundred twenty-three trillion, twelve billion, three hundred twelve million, one hundred eleven thousand, two hundred twelve".