220022111122021 has 4 divisors (see below), whose sum is σ = 236946888900652. Its totient is φ = 203097333343392.

The previous prime is 220022111122013. The next prime is 220022111122031. The reversal of 220022111122021 is 120221111220022.

220022111122021 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.

It can be written as a sum of positive squares in 2 ways, for example, as 13967971890625 + 206054139231396 = 3737375^2 + 14354586^2 .

It is a cyclic number.

It is not a de Polignac number, because 220022111122021 - 2³ = 220022111122013 is a prime.

It is a super-2 number, since 2×220022111122021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220022111122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220022111122031) 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, 8462388889296 + ... + 8462388889321.

It is an arithmetic number, because the mean of its divisors is an integer number (59236722225163).

Almost surely, 2^{220022111122021} is an apocalyptic number.

It is an amenable number.

220022111122021 is a deficient number, since it is larger than the sum of its proper divisors (16924777778631).

220022111122021 is a wasteful number, since it uses less digits than its factorization.

220022111122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16924777778630.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220022111122021 its reverse (120221111220022), we get a palindrome (340243222342043).

The spelling of 220022111122021 in words is "two hundred twenty trillion, twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, twenty-one".