22122202001021 has 4 divisors (see below), whose sum is σ = 22125936972672. Its totient is φ = 22118467029372.

The previous prime is 22122202000907. The next prime is 22122202001041. The reversal of 22122202001021 is 12010020222122.

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 22122202001021 - 2²² = 22122197806717 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 (22122202001041) 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, 1867476941 + ... + 1867488786.

It is an arithmetic number, because the mean of its divisors is an integer number (5531484243168).

Almost surely, 2^{22122202001021} is an apocalyptic number.

It is an amenable number.

22122202001021 is a deficient number, since it is larger than the sum of its proper divisors (3734971651).

22122202001021 is an equidigital number, since it uses as much as digits as its factorization.

22122202001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734971650.

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

Adding to 22122202001021 its reverse (12010020222122), we get a palindrome (34132222223143).

The spelling of 22122202001021 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred two million, one thousand, twenty-one".