20222750821 has 16 divisors (see below), whose sum is σ = 25562233984. Its totient is φ = 15567971904.

The previous prime is 20222750819. The next prime is 20222750827. The reversal of 20222750821 is 12805722202.

It is a cyclic number.

It is not a de Polignac number, because 20222750821 - 2¹ = 20222750819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222750827) 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, 2999715 + ... + 3006448.

It is an arithmetic number, because the mean of its divisors is an integer number (1597639624).

Almost surely, 2^20222750821 is an apocalyptic number.

It is an amenable number.

20222750821 is a deficient number, since it is larger than the sum of its proper divisors (5339483163).

20222750821 is a wasteful number, since it uses less digits than its factorization.

20222750821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6006220.

The product of its (nonzero) digits is 8960, while the sum is 31.

The spelling of 20222750821 in words is "twenty billion, two hundred twenty-two million, seven hundred fifty thousand, eight hundred twenty-one".