21002002011010 has 16 divisors (see below), whose sum is σ = 37834313311872. Its totient is φ = 8393976428400.

The previous prime is 21002002010989. The next prime is 21002002011041. The reversal of 21002002011010 is 1011020020012.

It is a super-2 number, since 2×21002002011010² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 853034076 + ... + 853058695.

It is an arithmetic number, because the mean of its divisors is an integer number (2364644581992).

Almost surely, 2^{21002002011010} is an apocalyptic number.

21002002011010 is a deficient number, since it is larger than the sum of its proper divisors (16832311300862).

21002002011010 is a wasteful number, since it uses less digits than its factorization.

21002002011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706094009.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21002002011010 its reverse (1011020020012), we get a palindrome (22013022031022).

The spelling of 21002002011010 in words is "twenty-one trillion, two billion, two million, eleven thousand, ten".