22012315511623 has 4 divisors (see below), whose sum is σ = 23307157600560. Its totient is φ = 20717473422688.

The previous prime is 22012315511621. The next prime is 22012315511633. The reversal of 22012315511623 is 32611551321022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22012315511623 - 2¹ = 22012315511621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012315511621) 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, 647421044443 + ... + 647421044476.

It is an arithmetic number, because the mean of its divisors is an integer number (5826789400140).

Almost surely, 2^{22012315511623} is an apocalyptic number.

22012315511623 is a deficient number, since it is larger than the sum of its proper divisors (1294842088937).

22012315511623 is a wasteful number, since it uses less digits than its factorization.

22012315511623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294842088936.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 22012315511623 its reverse (32611551321022), we get a palindrome (54623866832645).

The spelling of 22012315511623 in words is "twenty-two trillion, twelve billion, three hundred fifteen million, five hundred eleven thousand, six hundred twenty-three".