121112021012 has 48 divisors (see below), whose sum is σ = 227459643264. Its totient is φ = 56284800000.

The previous prime is 121112020957. The next prime is 121112021071. The reversal of 121112021012 is 210120211121.

It is a super-2 number, since 2×121112021012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882812 + ... + 1010732.

It is an arithmetic number, because the mean of its divisors is an integer number (4738742568).

Almost surely, 2^121112021012 is an apocalyptic number.

It is an amenable number.

121112021012 is a deficient number, since it is larger than the sum of its proper divisors (106347622252).

121112021012 is a wasteful number, since it uses less digits than its factorization.

121112021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128240 (or 128238 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121112021012 its reverse (210120211121), we get a palindrome (331232232133).

The spelling of 121112021012 in words is "one hundred twenty-one billion, one hundred twelve million, twenty-one thousand, twelve".