21201002110210 has 64 divisors (see below), whose sum is σ = 41139448680960. Its totient is φ = 7820042952960.

The previous prime is 21201002110177. The next prime is 21201002110231. The reversal of 21201002110210 is 1201120010212.

It is a Harshad number since it is a multiple of its sum of digits (13).

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 31 ways as a sum of consecutive naturals, for example, 610909719 + ... + 610944421.

It is an arithmetic number, because the mean of its divisors is an integer number (642803885640).

Almost surely, 2^{21201002110210} is an apocalyptic number.

21201002110210 is a deficient number, since it is larger than the sum of its proper divisors (19938446570750).

21201002110210 is a wasteful number, since it uses less digits than its factorization.

21201002110210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39403.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21201002110210 its reverse (1201120010212), we get a palindrome (22402122120422).

The spelling of 21201002110210 in words is "twenty-one trillion, two hundred one billion, two million, one hundred ten thousand, two hundred ten".