22241221023 has 64 divisors (see below), whose sum is σ = 36278323200. Its totient is φ = 11831242752.

The previous prime is 22241221019. The next prime is 22241221031. The reversal of 22241221023 is 32012214222.

It is not a de Polignac number, because 22241221023 - 2² = 22241221019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22241221073) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17068590 + ... + 17069892.

It is an arithmetic number, because the mean of its divisors is an integer number (566848800).

Almost surely, 2^22241221023 is an apocalyptic number.

22241221023 is a deficient number, since it is larger than the sum of its proper divisors (14037102177).

22241221023 is a wasteful number, since it uses less digits than its factorization.

22241221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22241221023 its reverse (32012214222), we get a palindrome (54253435245).

The spelling of 22241221023 in words is "twenty-two billion, two hundred forty-one million, two hundred twenty-one thousand, twenty-three".