121112212042 has 16 divisors (see below), whose sum is σ = 183060864000. Its totient is φ = 60092331840.

The previous prime is 121112212021. The next prime is 121112212051. The reversal of 121112212042 is 240212211121.

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, 499959 + ... + 701557.

It is an arithmetic number, because the mean of its divisors is an integer number (11441304000).

Almost surely, 2^121112212042 is an apocalyptic number.

121112212042 is a deficient number, since it is larger than the sum of its proper divisors (61948651958).

121112212042 is a wasteful number, since it uses less digits than its factorization.

121112212042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203901.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121112212042 its reverse (240212211121), we get a palindrome (361324423163).

The spelling of 121112212042 in words is "one hundred twenty-one billion, one hundred twelve million, two hundred twelve thousand, forty-two".