20722022209 has 16 divisors (see below), whose sum is σ = 23749015680. Its totient is φ = 17711781120.

The previous prime is 20722022207. The next prime is 20722022227. The reversal of 20722022209 is 90222022702.

It is a cyclic number.

It is not a de Polignac number, because 20722022209 - 2¹ = 20722022207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20722022207) 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, 4386969 + ... + 4391689.

It is an arithmetic number, because the mean of its divisors is an integer number (1484313480).

Almost surely, 2^20722022209 is an apocalyptic number.

It is an amenable number.

20722022209 is a deficient number, since it is larger than the sum of its proper divisors (3026993471).

20722022209 is a wasteful number, since it uses less digits than its factorization.

20722022209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360.

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 20722022209 in words is "twenty billion, seven hundred twenty-two million, twenty-two thousand, two hundred nine".