21772228286007 has 6 divisors (see below), whose sum is σ = 31448774190912. Its totient is φ = 14514818857332.

The previous prime is 21772228285991. The next prime is 21772228286021. The reversal of 21772228286007 is 70068282227712.

21772228286007 is a `hidden beast` number, since 2 + 1 + 7 + 7 + 2 + 2 + 2 + 8 + 28 + 600 + 7 = 666.

It is not a de Polignac number, because 21772228286007 - 2⁴ = 21772228285991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21772228286027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1209568238103 + ... + 1209568238120.

It is an arithmetic number, because the mean of its divisors is an integer number (5241462365152).

Almost surely, 2^{21772228286007} is an apocalyptic number.

21772228286007 is a deficient number, since it is larger than the sum of its proper divisors (9676545904905).

21772228286007 is a wasteful number, since it uses less digits than its factorization.

21772228286007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419136476229 (or 2419136476226 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

The spelling of 21772228286007 in words is "twenty-one trillion, seven hundred seventy-two billion, two hundred twenty-eight million, two hundred eighty-six thousand, seven".