21225949852941 has 12 divisors (see below), whose sum is σ = 30665272820832. Its totient is φ = 14148063630216.

The previous prime is 21225949852937. The next prime is 21225949853011. The reversal of 21225949852941 is 14925894952212.

21225949852941 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 5 + 9 + 498 + 52 + 94 + 1 = 666.

It is not a de Polignac number, because 21225949852941 - 2² = 21225949852937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21225949852741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214081441 + ... + 214180566.

It is an arithmetic number, because the mean of its divisors is an integer number (2555439401736).

Almost surely, 2^{21225949852941} is an apocalyptic number.

It is an amenable number.

21225949852941 is a deficient number, since it is larger than the sum of its proper divisors (9439322967891).

21225949852941 is a wasteful number, since it uses less digits than its factorization.

21225949852941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428267520 (or 428267517 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 63.

The spelling of 21225949852941 in words is "twenty-one trillion, two hundred twenty-five billion, nine hundred forty-nine million, eight hundred fifty-two thousand, nine hundred forty-one".