22534010021 has 4 divisors (see below), whose sum is σ = 22534323852. Its totient is φ = 22533696192.

The previous prime is 22534010003. The next prime is 22534010029. The reversal of 22534010021 is 12001043522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 14942373121 + 7591636900 = 122239^2 + 87130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22534010021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22534009975 and 22534010002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22534010029) 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, 9911 + ... + 212523.

It is an arithmetic number, because the mean of its divisors is an integer number (5633580963).

Almost surely, 2^22534010021 is an apocalyptic number.

It is an amenable number.

22534010021 is a deficient number, since it is larger than the sum of its proper divisors (313831).

22534010021 is a wasteful number, since it uses less digits than its factorization.

22534010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313830.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 22534010021 its reverse (12001043522), we get a palindrome (34535053543).

The spelling of 22534010021 in words is "twenty-two billion, five hundred thirty-four million, ten thousand, twenty-one".