21772317107 has 8 divisors (see below), whose sum is σ = 21973647360. Its totient is φ = 21571913160.

The previous prime is 21772317101. The next prime is 21772317121. The reversal of 21772317107 is 70171327712.

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 21772317107 - 2¹⁸ = 21772054963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21772317101) 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, 184307 + ... + 278412.

It is an arithmetic number, because the mean of its divisors is an integer number (2746705920).

Almost surely, 2^21772317107 is an apocalyptic number.

21772317107 is a deficient number, since it is larger than the sum of its proper divisors (201330253).

21772317107 is a wasteful number, since it uses less digits than its factorization.

21772317107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463153.

The product of its (nonzero) digits is 28812, while the sum is 38.

The spelling of 21772317107 in words is "twenty-one billion, seven hundred seventy-two million, three hundred seventeen thousand, one hundred seven".