22202102102021 has 4 divisors (see below), whose sum is σ = 22307325334944. Its totient is φ = 22096878869100.

The previous prime is 22202102102009. The next prime is 22202102102027. The reversal of 22202102102021 is 12020120120222.

It is a happy number.

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 22202102102021 - 2⁶ = 22202102101957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202102102027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52611616145 + ... + 52611616566.

It is an arithmetic number, because the mean of its divisors is an integer number (5576831333736).

Almost surely, 2^{22202102102021} is an apocalyptic number.

It is an amenable number.

22202102102021 is a deficient number, since it is larger than the sum of its proper divisors (105223232923).

22202102102021 is a wasteful number, since it uses less digits than its factorization.

22202102102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105223232922.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22202102102021 its reverse (12020120120222), we get a palindrome (34222222222243).

The spelling of 22202102102021 in words is "twenty-two trillion, two hundred two billion, one hundred two million, one hundred two thousand, twenty-one".