21000102010202 has 32 divisors (see below), whose sum is σ = 36204492810240. Its totient is φ = 8949108737520.

The previous prime is 21000102010193. The next prime is 21000102010211. The reversal of 21000102010202 is 20201020100012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21000102010193) and next prime (21000102010211).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4276574 + ... + 7764617.

It is an arithmetic number, because the mean of its divisors is an integer number (1131390400320).

Almost surely, 2^{21000102010202} is an apocalyptic number.

21000102010202 is a deficient number, since it is larger than the sum of its proper divisors (15204390800038).

21000102010202 is a wasteful number, since it uses less digits than its factorization.

21000102010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12041906.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21000102010202 its reverse (20201020100012), we get a palindrome (41201122110214).

The spelling of 21000102010202 in words is "twenty-one trillion, one hundred two million, ten thousand, two hundred two".