21225746713 has 8 divisors (see below), whose sum is σ = 21298636640. Its totient is φ = 21152910240.

The previous prime is 21225746687. The next prime is 21225746741. The reversal of 21225746713 is 31764752212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21225746713 - 2⁵ = 21225746681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21225746743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884173 + ... + 907861.

It is an arithmetic number, because the mean of its divisors is an integer number (2662329580).

Almost surely, 2^21225746713 is an apocalyptic number.

It is an amenable number.

21225746713 is a deficient number, since it is larger than the sum of its proper divisors (72889927).

21225746713 is a wasteful number, since it uses less digits than its factorization.

21225746713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26727.

The product of its digits is 141120, while the sum is 40.

The spelling of 21225746713 in words is "twenty-one billion, two hundred twenty-five million, seven hundred forty-six thousand, seven hundred thirteen".