220020211010121 has 4 divisors (see below), whose sum is σ = 293360281346832. Its totient is φ = 146680140673412.

The previous prime is 220020211010111. The next prime is 220020211010147. The reversal of 220020211010121 is 121010112020022.

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.

It is a cyclic number.

It is not a de Polignac number, because 220020211010121 - 2²¹ = 220020208912969 is a prime.

It is a super-2 number, since 2×220020211010121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220020211010121.

It is not an unprimeable number, because it can be changed into a prime (220020211010111) 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, 36670035168351 + ... + 36670035168356.

It is an arithmetic number, because the mean of its divisors is an integer number (73340070336708).

Almost surely, 2^{220020211010121} is an apocalyptic number.

It is an amenable number.

220020211010121 is a deficient number, since it is larger than the sum of its proper divisors (73340070336711).

220020211010121 is an equidigital number, since it uses as much as digits as its factorization.

220020211010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73340070336710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220020211010121 its reverse (121010112020022), we get a palindrome (341030323030143).

The spelling of 220020211010121 in words is "two hundred twenty trillion, twenty billion, two hundred eleven million, ten thousand, one hundred twenty-one".