22056103124021 has 4 divisors (see below), whose sum is σ = 22070142656544. Its totient is φ = 22042063591500.

The previous prime is 22056103124009. The next prime is 22056103124023. The reversal of 22056103124021 is 12042130165022.

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-22056103124021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22056103124023) 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, 7019763905 + ... + 7019767046.

It is an arithmetic number, because the mean of its divisors is an integer number (5517535664136).

Almost surely, 2^{22056103124021} is an apocalyptic number.

It is an amenable number.

22056103124021 is a deficient number, since it is larger than the sum of its proper divisors (14039532523).

22056103124021 is a wasteful number, since it uses less digits than its factorization.

22056103124021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14039532522.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 22056103124021 its reverse (12042130165022), we get a palindrome (34098233289043).

The spelling of 22056103124021 in words is "twenty-two trillion, fifty-six billion, one hundred three million, one hundred twenty-four thousand, twenty-one".