21022846811 has 16 divisors (see below), whose sum is σ = 22201910784. Its totient is φ = 19885872864.

The previous prime is 21022846787. The next prime is 21022846841. The reversal of 21022846811 is 11864822012.

It is a cyclic number.

It is not a de Polignac number, because 21022846811 - 2²⁶ = 20955737947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022846841) 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, 103916 + ... + 229878.

It is an arithmetic number, because the mean of its divisors is an integer number (1387619424).

Almost surely, 2^21022846811 is an apocalyptic number.

21022846811 is a deficient number, since it is larger than the sum of its proper divisors (1179063973).

21022846811 is a wasteful number, since it uses less digits than its factorization.

21022846811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126130.

The product of its (nonzero) digits is 12288, while the sum is 35.

The spelling of 21022846811 in words is "twenty-one billion, twenty-two million, eight hundred forty-six thousand, eight hundred eleven".