22521771252 has 24 divisors (see below), whose sum is σ = 58389777600. Its totient is φ = 7507257048.

The previous prime is 22521771247. The next prime is 22521771269. The reversal of 22521771252 is 25217712522.

22521771252 is a `hidden beast` number, since 2 + 2 + 521 + 7 + 7 + 125 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104267352 + ... + 104267567.

It is an arithmetic number, because the mean of its divisors is an integer number (2432907400).

Almost surely, 2^22521771252 is an apocalyptic number.

It is an amenable number.

22521771252 is an abundant number, since it is smaller than the sum of its proper divisors (35868006348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22521771252 is a wasteful number, since it uses less digits than its factorization.

22521771252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208534932 (or 208534924 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The spelling of 22521771252 in words is "twenty-two billion, five hundred twenty-one million, seven hundred seventy-one thousand, two hundred fifty-two".