121011020221100 has 72 divisors (see below), whose sum is σ = 262775194602816. Its totient is φ = 48370996800000.

The previous prime is 121011020221061. The next prime is 121011020221127. The reversal of 121011020221100 is 1122020110121.

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, 4115866400 + ... + 4115895800.

Almost surely, 2^{121011020221100} is an apocalyptic number.

121011020221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011020221100 is an abundant number, since it is smaller than the sum of its proper divisors (141764174381716).

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

121011020221100 is a wasteful number, since it uses less digits than its factorization.

121011020221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56427 (or 56420 counting only the distinct ones).

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

Adding to 121011020221100 its reverse (1122020110121), we get a palindrome (122133040331221).

The spelling of 121011020221100 in words is "one hundred twenty-one trillion, eleven billion, twenty million, two hundred twenty-one thousand, one hundred".