22201003231021 has 4 divisors (see below), whose sum is σ = 22251118362912. Its totient is φ = 22150888099132.

The previous prime is 22201003231013. The next prime is 22201003231049. The reversal of 22201003231021 is 12013230010222.

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 22201003231021 - 2³ = 22201003231013 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 22201003231021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201003231321) 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, 25057565281 + ... + 25057566166.

It is an arithmetic number, because the mean of its divisors is an integer number (5562779590728).

Almost surely, 2^{22201003231021} is an apocalyptic number.

It is an amenable number.

22201003231021 is a deficient number, since it is larger than the sum of its proper divisors (50115131891).

22201003231021 is an equidigital number, since it uses as much as digits as its factorization.

22201003231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50115131890.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22201003231021 its reverse (12013230010222), we get a palindrome (34214233241243).

The spelling of 22201003231021 in words is "twenty-two trillion, two hundred one billion, three million, two hundred thirty-one thousand, twenty-one".