121012312112 has 40 divisors (see below), whose sum is σ = 238491204336. Its totient is φ = 59473600256.

The previous prime is 121012312111. The next prime is 121012312133. The reversal of 121012312112 is 211213210121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121012312111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30338 + ... + 492894.

Almost surely, 2^121012312112 is an apocalyptic number.

It is an amenable number.

121012312112 is a deficient number, since it is larger than the sum of its proper divisors (117478892224).

121012312112 is a wasteful number, since it uses less digits than its factorization.

121012312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462845 (or 462839 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121012312112 its reverse (211213210121), we get a palindrome (332225522233).

The spelling of 121012312112 in words is "one hundred twenty-one billion, twelve million, three hundred twelve thousand, one hundred twelve".