21227062995 has 48 divisors (see below), whose sum is σ = 37170124992. Its totient is φ = 11205519360.

The previous prime is 21227062993. The next prime is 21227062999. The reversal of 21227062995 is 59926072212.

21227062995 is a `hidden beast` number, since 2 + 12 + 2 + 7 + 0 + 629 + 9 + 5 = 666.

It is not a de Polignac number, because 21227062995 - 2¹ = 21227062993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 21227062995.

It is not an unprimeable number, because it can be changed into a prime (21227062993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4355410 + ... + 4360280.

It is an arithmetic number, because the mean of its divisors is an integer number (774377604).

Almost surely, 2^21227062995 is an apocalyptic number.

21227062995 is a deficient number, since it is larger than the sum of its proper divisors (15943061997).

21227062995 is a wasteful number, since it uses less digits than its factorization.

21227062995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5852 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 21227062995 in words is "twenty-one billion, two hundred twenty-seven million, sixty-two thousand, nine hundred ninety-five".