221021122022022 has 64 divisors (see below), whose sum is σ = 531783320302080. Its totient is φ = 59824908688896.

The previous prime is 221021122021979. The next prime is 221021122022027. The reversal of 221021122022022 is 220220221120122.

It is a super-4 number, since 4×221021122022022⁴ (a number of 58 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 221021122022022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021122022027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150054798 + ... + 151520574.

It is an arithmetic number, because the mean of its divisors is an integer number (8309114379720).

Almost surely, 2^{221021122022022} is an apocalyptic number.

221021122022022 is an abundant number, since it is smaller than the sum of its proper divisors (310762198280058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221021122022022 is a wasteful number, since it uses less digits than its factorization.

221021122022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654765.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221021122022022 its reverse (220220221120122), we get a palindrome (441241343142144).

The spelling of 221021122022022 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty-two million, twenty-two thousand, twenty-two".