22201023121 has 4 divisors (see below), whose sum is σ = 22209288192. Its totient is φ = 22192758052.

The previous prime is 22201023107. The next prime is 22201023133. The reversal of 22201023121 is 12132010222.

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 a de Polignac number, because none of the positive numbers 2^k-22201023121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201023095 and 22201023104.

It is not an unprimeable number, because it can be changed into a prime (22201023191) 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, 4128505 + ... + 4133878.

It is an arithmetic number, because the mean of its divisors is an integer number (5552322048).

Almost surely, 2^22201023121 is an apocalyptic number.

It is an amenable number.

22201023121 is a deficient number, since it is larger than the sum of its proper divisors (8265071).

22201023121 is an equidigital number, since it uses as much as digits as its factorization.

22201023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8265070.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22201023121 its reverse (12132010222), we get a palindrome (34333033343).

The spelling of 22201023121 in words is "twenty-two billion, two hundred one million, twenty-three thousand, one hundred twenty-one".