21210212220002 has 32 divisors (see below), whose sum is σ = 34283092269888. Its totient is φ = 9783489583296.

The previous prime is 21210212219941. The next prime is 21210212220011. The reversal of 21210212220002 is 20002221201212.

It is a happy number.

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, 450366368 + ... + 450413460.

It is an arithmetic number, because the mean of its divisors is an integer number (1071346633434).

Almost surely, 2^{21210212220002} is an apocalyptic number.

21210212220002 is a deficient number, since it is larger than the sum of its proper divisors (13072880049886).

21210212220002 is a wasteful number, since it uses less digits than its factorization.

21210212220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57074.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21210212220002 its reverse (20002221201212), we get a palindrome (41212433421214).

The spelling of 21210212220002 in words is "twenty-one trillion, two hundred ten billion, two hundred twelve million, two hundred twenty thousand, two".