21002211211010 has 128 divisors (see below), whose sum is σ = 41238718963200. Its totient is φ = 7677040250880.

The previous prime is 21002211210997. The next prime is 21002211211019. The reversal of 21002211211010 is 1011211220012.

It is not an unprimeable number, because it can be changed into a prime (21002211211019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 252331181 + ... + 252414399.

It is an arithmetic number, because the mean of its divisors is an integer number (322177491900).

Almost surely, 2^{21002211211010} is an apocalyptic number.

21002211211010 is a deficient number, since it is larger than the sum of its proper divisors (20236507752190).

21002211211010 is a wasteful number, since it uses less digits than its factorization.

21002211211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83676.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21002211211010 its reverse (1011211220012), we get a palindrome (22013422431022).

The spelling of 21002211211010 in words is "twenty-one trillion, two billion, two hundred eleven million, two hundred eleven thousand, ten".