21227063013 has 16 divisors (see below), whose sum is σ = 33866539840. Its totient is φ = 13062807792.

The previous prime is 21227062999. The next prime is 21227063029. The reversal of 21227063013 is 31036072212.

21227063013 is a `hidden beast` number, since 2 + 1 + 2 + 27 + 0 + 630 + 1 + 3 = 666.

It is not a de Polignac number, because 21227063013 - 2⁶ = 21227062949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21227063713) 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 15 ways as a sum of consecutive naturals, for example, 30237631 + ... + 30238332.

It is an arithmetic number, because the mean of its divisors is an integer number (2116658740).

Almost surely, 2^21227063013 is an apocalyptic number.

It is an amenable number.

21227063013 is a deficient number, since it is larger than the sum of its proper divisors (12639476827).

21227063013 is a wasteful number, since it uses less digits than its factorization.

21227063013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60475985 (or 60475979 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The spelling of 21227063013 in words is "twenty-one billion, two hundred twenty-seven million, sixty-three thousand, thirteen".