21221200111202 has 32 divisors (see below), whose sum is σ = 39194776596864. Its totient is φ = 8391519388800.

The previous prime is 21221200111123. The next prime is 21221200111211. The reversal of 21221200111202 is 20211100212212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25143824 + ... + 25974107.

It is an arithmetic number, because the mean of its divisors is an integer number (1224836768652).

Almost surely, 2^{21221200111202} is an apocalyptic number.

21221200111202 is a deficient number, since it is larger than the sum of its proper divisors (17973576485662).

21221200111202 is a wasteful number, since it uses less digits than its factorization.

21221200111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51120234.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21221200111202 its reverse (20211100212212), we get a palindrome (41432300323414).

The spelling of 21221200111202 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred million, one hundred eleven thousand, two hundred two".