22645221051 has 16 divisors (see below), whose sum is σ = 30264785408. Its totient is φ = 15061269600.

The previous prime is 22645221019. The next prime is 22645221077. The reversal of 22645221051 is 15012254622.

It is not a de Polignac number, because 22645221051 - 2⁵ = 22645221019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22645231051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4007310 + ... + 4012956.

It is an arithmetic number, because the mean of its divisors is an integer number (1891549088).

Almost surely, 2^22645221051 is an apocalyptic number.

22645221051 is a deficient number, since it is larger than the sum of its proper divisors (7619564357).

22645221051 is a wasteful number, since it uses less digits than its factorization.

22645221051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8562.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 22645221051 its reverse (15012254622), we get a palindrome (37657475673).

The spelling of 22645221051 in words is "twenty-two billion, six hundred forty-five million, two hundred twenty-one thousand, fifty-one".