21002220022210 has 16 divisors (see below), whose sum is σ = 43204566902976. Its totient is φ = 7200761150448.

The previous prime is 21002220022193. The next prime is 21002220022279. The reversal of 21002220022210 is 1222002220012.

It is a super-2 number, since 2×21002220022210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150015857232 + ... + 150015857371.

It is an arithmetic number, because the mean of its divisors is an integer number (2700285431436).

Almost surely, 2^{21002220022210} is an apocalyptic number.

21002220022210 is an abundant number, since it is smaller than the sum of its proper divisors (22202346880766).

21002220022210 is a wasteful number, since it uses less digits than its factorization.

21002220022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300031714617.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21002220022210 its reverse (1222002220012), we get a palindrome (22224222242222).

The spelling of 21002220022210 in words is "twenty-one trillion, two billion, two hundred twenty million, twenty-two thousand, two hundred ten".