20010222109 has 2 divisors, whose sum is σ = 20010222110. Its totient is φ = 20010222108.

The previous prime is 20010222083. The next prime is 20010222121. The reversal of 20010222109 is 90122201002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17985492100 + 2024730009 = 134110^2 + 44997^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010222109 - 2¹⁹ = 20009697821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010222179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005111054 + 10005111055.

It is an arithmetic number, because the mean of its divisors is an integer number (10005111055).

Almost surely, 2^20010222109 is an apocalyptic number.

It is an amenable number.

20010222109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010222109 is an equidigital number, since it uses as much as digits as its factorization.

20010222109 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 20010222109 in words is "twenty billion, ten million, two hundred twenty-two thousand, one hundred nine".