121440044100 has 72 divisors (see below), whose sum is σ = 351698614848. Its totient is φ = 32353404800.

The previous prime is 121440044027. The next prime is 121440044123. The reversal of 121440044100 is 1440044121.

It is a super-2 number, since 2×121440044100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127537 + ... + 509063.

It is an arithmetic number, because the mean of its divisors is an integer number (4884702984).

Almost surely, 2^121440044100 is an apocalyptic number.

121440044100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121440044100 is an abundant number, since it is smaller than the sum of its proper divisors (230258570748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121440044100 is a wasteful number, since it uses less digits than its factorization.

121440044100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382605 (or 382598 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 121440044100 its sum of digits (21), we get a palindrome (121440044121).

Adding to 121440044100 its reverse (1440044121), we get a palindrome (122880088221).

The spelling of 121440044100 in words is "one hundred twenty-one billion, four hundred forty million, forty-four thousand, one hundred".