21222672763 has 16 divisors (see below), whose sum is σ = 22855472640. Its totient is φ = 19642975200.

The previous prime is 21222672739. The next prime is 21222672781. The reversal of 21222672763 is 36727622212.

It is not a de Polignac number, because 21222672763 - 2²¹ = 21220575611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222672463) 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, 489093 + ... + 530713.

It is an arithmetic number, because the mean of its divisors is an integer number (1428467040).

Almost surely, 2^21222672763 is an apocalyptic number.

21222672763 is a deficient number, since it is larger than the sum of its proper divisors (1632799877).

21222672763 is a wasteful number, since it uses less digits than its factorization.

21222672763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42258.

The product of its digits is 169344, while the sum is 40.

The spelling of 21222672763 in words is "twenty-one billion, two hundred twenty-two million, six hundred seventy-two thousand, seven hundred sixty-three".