21225772307 has 8 divisors (see below), whose sum is σ = 22035293040. Its totient is φ = 20421424800.

The previous prime is 21225772303. The next prime is 21225772313. The reversal of 21225772307 is 70327752212.

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 21225772307 - 2² = 21225772303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21225772303) 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 in 7 ways as a sum of consecutive naturals, for example, 1284944 + ... + 1301357.

It is an arithmetic number, because the mean of its divisors is an integer number (2754411630).

Almost surely, 2^21225772307 is an apocalyptic number.

21225772307 is a deficient number, since it is larger than the sum of its proper divisors (809520733).

21225772307 is a wasteful number, since it uses less digits than its factorization.

21225772307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586613.

The product of its (nonzero) digits is 82320, while the sum is 38.

The spelling of 21225772307 in words is "twenty-one billion, two hundred twenty-five million, seven hundred seventy-two thousand, three hundred seven".