121011021200 has 30 divisors (see below), whose sum is σ = 290728979394. Its totient is φ = 48404408320.

The previous prime is 121011021191. The next prime is 121011021211. The reversal of 121011021200 is 2120110121.

It can be written as a sum of positive squares in 3 ways, for example, as 6141543424 + 114869477776 = 78368^2 + 338924^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151263377 + ... + 151264176.

Almost surely, 2^121011021200 is an apocalyptic number.

121011021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011021200 is an abundant number, since it is smaller than the sum of its proper divisors (169717958194).

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

121011021200 is a wasteful number, since it uses less digits than its factorization.

121011021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302527571 (or 302527560 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121011021200 its reverse (2120110121), we get a palindrome (123131131321).

It can be divided in two parts, 12101 and 1021200, that added together give a palindrome (1033301).

The spelling of 121011021200 in words is "one hundred twenty-one billion, eleven million, twenty-one thousand, two hundred".