8221772701 has 16 divisors (see below), whose sum is σ = 8927732160. Its totient is φ = 7545000960.

The previous prime is 8221772683. The next prime is 8221772707. The reversal of 8221772701 is 1072771228.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221772701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221772707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133821 + ... + 185341.

It is an arithmetic number, because the mean of its divisors is an integer number (557983260).

Almost surely, 2^8221772701 is an apocalyptic number.

It is an amenable number.

8221772701 is a deficient number, since it is larger than the sum of its proper divisors (705959459).

8221772701 is a wasteful number, since it uses less digits than its factorization.

8221772701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51804.

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 8221772701 is about 90673.9913150403. The cubic root of 8221772701 is about 2018.3128660991.

The spelling of 8221772701 in words is "eight billion, two hundred twenty-one million, seven hundred seventy-two thousand, seven hundred one".