121021112112112 has 20 divisors (see below), whose sum is σ = 234751371454840. Its totient is φ = 60440113027008.

The previous prime is 121021112112079. The next prime is 121021112112133. The reversal of 121021112112112 is 211211211120121.

It is a super-2 number, since 2×121021112112112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121021112112112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4402675143 + ... + 4402702630.

It is an arithmetic number, because the mean of its divisors is an integer number (11737568572742).

Almost surely, 2^{121021112112112} is an apocalyptic number.

It is an amenable number.

121021112112112 is a deficient number, since it is larger than the sum of its proper divisors (113730259342728).

121021112112112 is an equidigital number, since it uses as much as digits as its factorization.

121021112112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8805378640 (or 8805378634 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121021112112112 its reverse (211211211120121), we get a palindrome (332232323232233).

The spelling of 121021112112112 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twelve million, one hundred twelve thousand, one hundred twelve".