220013311021 has 4 divisors (see below), whose sum is σ = 251443784032. Its totient is φ = 188582838012.

The previous prime is 220013311003. The next prime is 220013311043. The reversal of 220013311021 is 120113310022.

220013311021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120113310022 = 2 ⋅60056655011.

It is a cyclic number.

It is not a de Polignac number, because 220013311021 - 2⁷ = 220013310893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220013310986 and 220013311004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220013312021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15715236495 + ... + 15715236508.

It is an arithmetic number, because the mean of its divisors is an integer number (62860946008).

Almost surely, 2^220013311021 is an apocalyptic number.

It is an amenable number.

220013311021 is a deficient number, since it is larger than the sum of its proper divisors (31430473011).

220013311021 is an equidigital number, since it uses as much as digits as its factorization.

220013311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31430473010.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 220013311021 its reverse (120113310022), we get a palindrome (340126621043).

Subtracting from 220013311021 its reverse (120113310022), we obtain a palindrome (99900000999).

The spelling of 220013311021 in words is "two hundred twenty billion, thirteen million, three hundred eleven thousand, twenty-one".