22621025012 has 6 divisors (see below), whose sum is σ = 39586793778. Its totient is φ = 11310512504.

The previous prime is 22621025003. The next prime is 22621025017. The reversal of 22621025012 is 21052012622.

It can be written as a sum of positive squares in only one way, i.e., 22450826896 + 170198116 = 149836^2 + 13046^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22621025017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2827628123 + ... + 2827628130.

It is an arithmetic number, because the mean of its divisors is an integer number (6597798963).

Almost surely, 2^22621025012 is an apocalyptic number.

It is an amenable number.

22621025012 is a deficient number, since it is larger than the sum of its proper divisors (16965768766).

22621025012 is a wasteful number, since it uses less digits than its factorization.

22621025012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655256257 (or 5655256255 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 22621025012 its reverse (21052012622), we get a palindrome (43673037634).

The spelling of 22621025012 in words is "twenty-two billion, six hundred twenty-one million, twenty-five thousand, twelve".