20220219989 has 2 divisors, whose sum is σ = 20220219990. Its totient is φ = 20220219988.

The previous prime is 20220219967. The next prime is 20220220049. The reversal of 20220219989 is 98991202202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18368380900 + 1851839089 = 135530^2 + 43033^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220219989 - 2²⁴ = 20203442773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20220219389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110109994 + 10110109995.

It is an arithmetic number, because the mean of its divisors is an integer number (10110109995).

Almost surely, 2^20220219989 is an apocalyptic number.

It is an amenable number.

20220219989 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220219989 is an equidigital number, since it uses as much as digits as its factorization.

20220219989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 20220219989 in words is "twenty billion, two hundred twenty million, two hundred nineteen thousand, nine hundred eighty-nine".