21210100000010 has 32 divisors (see below), whose sum is σ = 39842525814912. Its totient is φ = 8114267318080.

The previous prime is 21210099999971. The next prime is 21210100000093. The reversal of 21210100000010 is 1000000101212.

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, 3044429 + ... + 7189488.

It is an arithmetic number, because the mean of its divisors is an integer number (1245078931716).

Almost surely, 2^{21210100000010} is an apocalyptic number.

21210100000010 is a deficient number, since it is larger than the sum of its proper divisors (18632425814902).

21210100000010 is a wasteful number, since it uses less digits than its factorization.

21210100000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10242958.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 21210100000010 its reverse (1000000101212), we get a palindrome (22210100101222).

The spelling of 21210100000010 in words is "twenty-one trillion, two hundred ten billion, one hundred million, ten", and thus it is an aban number.