22521023012 has 6 divisors (see below), whose sum is σ = 39411790278. Its totient is φ = 11260511504.

The previous prime is 22521023011. The next prime is 22521023017. The reversal of 22521023012 is 21032012522.

It can be written as a sum of positive squares in only one way, i.e., 21710254336 + 810768676 = 147344^2 + 28474^2 .

It is not an unprimeable number, because it can be changed into a prime (22521023011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2815127873 + ... + 2815127880.

It is an arithmetic number, because the mean of its divisors is an integer number (6568631713).

Almost surely, 2^22521023012 is an apocalyptic number.

It is an amenable number.

22521023012 is a deficient number, since it is larger than the sum of its proper divisors (16890767266).

22521023012 is a wasteful number, since it uses less digits than its factorization.

22521023012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630255757 (or 5630255755 counting only the distinct ones).

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

Adding to 22521023012 its reverse (21032012522), we get a palindrome (43553035534).

The spelling of 22521023012 in words is "twenty-two billion, five hundred twenty-one million, twenty-three thousand, twelve".