20022120109 has 2 divisors, whose sum is σ = 20022120110. Its totient is φ = 20022120108.

The previous prime is 20022120101. The next prime is 20022120137. The reversal of 20022120109 is 90102122002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12099340009 + 7922780100 = 109997^2 + 89010^2 .

It is a cyclic number.

It is not a de Polignac number, because 20022120109 - 2³ = 20022120101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022120101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011060054 + 10011060055.

It is an arithmetic number, because the mean of its divisors is an integer number (10011060055).

Almost surely, 2^20022120109 is an apocalyptic number.

It is an amenable number.

20022120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022120109 is an equidigital number, since it uses as much as digits as its factorization.

20022120109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20022120109 in words is "twenty billion, twenty-two million, one hundred twenty thousand, one hundred nine".