22220202110021 has 8 divisors (see below), whose sum is σ = 22641355571064. Its totient is φ = 21800883741120.

The previous prime is 22220202110009. The next prime is 22220202110023. The reversal of 22220202110021 is 12001120202222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3133657605796 + 19086544504225 = 1770214^2 + 4368815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22220202110021 - 2²² = 22220197915717 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 (22220202110023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458748590 + ... + 458797023.

It is an arithmetic number, because the mean of its divisors is an integer number (2830169446383).

Almost surely, 2^{22220202110021} is an apocalyptic number.

It is an amenable number.

22220202110021 is a deficient number, since it is larger than the sum of its proper divisors (421153461043).

22220202110021 is an equidigital number, since it uses as much as digits as its factorization.

22220202110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917546071.

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

Adding to 22220202110021 its reverse (12001120202222), we get a palindrome (34221322312243).

The spelling of 22220202110021 in words is "twenty-two trillion, two hundred twenty billion, two hundred two million, one hundred ten thousand, twenty-one".