21221120211002 has 8 divisors (see below), whose sum is σ = 31831751347200. Its totient is φ = 10610536428604.

The previous prime is 21221120210993. The next prime is 21221120211007. The reversal of 21221120211002 is 20011202112212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21221120211007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10696052 + ... + 12523887.

It is an arithmetic number, because the mean of its divisors is an integer number (3978968918400).

Almost surely, 2^{21221120211002} is an apocalyptic number.

21221120211002 is a deficient number, since it is larger than the sum of its proper divisors (10610631136198).

21221120211002 is a wasteful number, since it uses less digits than its factorization.

21221120211002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23676900.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21221120211002 its reverse (20011202112212), we get a palindrome (41232322323214).

The spelling of 21221120211002 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, two".