121021102001200 has 60 divisors (see below), whose sum is σ = 291269633619528. Its totient is φ = 48322457689600.

The previous prime is 121021102001147. The next prime is 121021102001227. The reversal of 121021102001200 is 2100201120121.

It is a super-2 number, since 2×121021102001200² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268471741 + ... + 268922140.

Almost surely, 2^{121021102001200} is an apocalyptic number.

121021102001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021102001200 is an abundant number, since it is smaller than the sum of its proper divisors (170248531618328).

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

121021102001200 is a wasteful number, since it uses less digits than its factorization.

121021102001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537394462 (or 537394451 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121021102001200 its reverse (2100201120121), we get a palindrome (123121303121321).

The spelling of 121021102001200 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred two million, one thousand, two hundred".