220311202113021 has 32 divisors (see below), whose sum is σ = 298813989817728. Its totient is φ = 144359534600960.

The previous prime is 220311202112977. The next prime is 220311202113043. The reversal of 220311202113021 is 120311202113022.

It is a cyclic number.

It is not a de Polignac number, because 220311202113021 - 2¹¹ = 220311202110973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220311202113061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 899558635 + ... + 899803511.

It is an arithmetic number, because the mean of its divisors is an integer number (9337937181804).

Almost surely, 2^{220311202113021} is an apocalyptic number.

It is an amenable number.

220311202113021 is a deficient number, since it is larger than the sum of its proper divisors (78502787704707).

220311202113021 is a wasteful number, since it uses less digits than its factorization.

220311202113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263501.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 220311202113021 its reverse (120311202113022), we get a palindrome (340622404226043).

Subtracting from 220311202113021 its reverse (120311202113022), we obtain a palindrome (99999999999999).

The spelling of 220311202113021 in words is "two hundred twenty trillion, three hundred eleven billion, two hundred two million, one hundred thirteen thousand, twenty-one".