21225650501562 has 48 divisors (see below), whose sum is σ = 46082611067328. Its totient is φ = 6514682553600.

The previous prime is 21225650501543. The next prime is 21225650501563. The reversal of 21225650501562 is 26510505652212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21225650501563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25693878 + ... + 26507105.

It is an arithmetic number, because the mean of its divisors is an integer number (960054397236).

Almost surely, 2^{21225650501562} is an apocalyptic number.

21225650501562 is an abundant number, since it is smaller than the sum of its proper divisors (24856960565766).

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

21225650501562 is a wasteful number, since it uses less digits than its factorization.

21225650501562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52201415 (or 52201402 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 21225650501562 in words is "twenty-one trillion, two hundred twenty-five billion, six hundred fifty million, five hundred one thousand, five hundred sixty-two".