21121021011202 has 16 divisors (see below), whose sum is σ = 36208047889152. Its totient is φ = 9051720323040.

The previous prime is 21121021011191. The next prime is 21121021011221. The reversal of 21121021011202 is 20211012012112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11249674 + ... + 12992197.

It is an arithmetic number, because the mean of its divisors is an integer number (2263002993072).

Almost surely, 2^{21121021011202} is an apocalyptic number.

21121021011202 is a deficient number, since it is larger than the sum of its proper divisors (15087026877950).

21121021011202 is a wasteful number, since it uses less digits than its factorization.

21121021011202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24304113.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21121021011202 its reverse (20211012012112), we get a palindrome (41332033023314).

The spelling of 21121021011202 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-one million, eleven thousand, two hundred two".