21220002020210 has 64 divisors (see below), whose sum is σ = 46728894643200. Its totient is φ = 6775689673152.

The previous prime is 21220002020179. The next prime is 21220002020227. The reversal of 21220002020210 is 1202020002212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135132452 + ... + 135289391.

It is an arithmetic number, because the mean of its divisors is an integer number (730138978800).

Almost surely, 2^{21220002020210} is an apocalyptic number.

21220002020210 is an abundant number, since it is smaller than the sum of its proper divisors (25508892622990).

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

21220002020210 is a wasteful number, since it uses less digits than its factorization.

21220002020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270421935.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21220002020210 its reverse (1202020002212), we get a palindrome (22422022022422).

The spelling of 21220002020210 in words is "twenty-one trillion, two hundred twenty billion, two million, twenty thousand, two hundred ten".