22221202102021 has 48 divisors (see below), whose sum is σ = 26525201020416. Its totient is φ = 18406527879168.

The previous prime is 22221202102013. The next prime is 22221202102039. The reversal of 22221202102021 is 12020120212222.

It is not a de Polignac number, because 22221202102021 - 2³ = 22221202102013 is a prime.

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 22221202102021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221202102051) 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 47 ways as a sum of consecutive naturals, for example, 497954116 + ... + 497998738.

It is an arithmetic number, because the mean of its divisors is an integer number (552608354592).

Almost surely, 2^{22221202102021} is an apocalyptic number.

It is an amenable number.

22221202102021 is a deficient number, since it is larger than the sum of its proper divisors (4303998918395).

22221202102021 is a wasteful number, since it uses less digits than its factorization.

22221202102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45302 (or 44989 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22221202102021 its reverse (12020120212222), we get a palindrome (34241322314243).

The spelling of 22221202102021 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred two million, one hundred two thousand, twenty-one".