22201021120021 has 4 divisors (see below), whose sum is σ = 23166282907872. Its totient is φ = 21235759332172.

The previous prime is 22201021119793. The next prime is 22201021120037. The reversal of 22201021120021 is 12002112010222.

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 22201021120021 - 2²¹ = 22201019022869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201021119977 and 22201021120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201021120321) 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, 482630893891 + ... + 482630893936.

It is an arithmetic number, because the mean of its divisors is an integer number (5791570726968).

Almost surely, 2^{22201021120021} is an apocalyptic number.

It is an amenable number.

22201021120021 is a deficient number, since it is larger than the sum of its proper divisors (965261787851).

22201021120021 is an equidigital number, since it uses as much as digits as its factorization.

22201021120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965261787850.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22201021120021 its reverse (12002112010222), we get a palindrome (34203133130243).

The spelling of 22201021120021 in words is "twenty-two trillion, two hundred one billion, twenty-one million, one hundred twenty thousand, twenty-one".