20213332109 has 2 divisors, whose sum is σ = 20213332110. Its totient is φ = 20213332108.

The previous prime is 20213332063. The next prime is 20213332133. The reversal of 20213332109 is 90123331202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20205769609 + 7562500 = 142147^2 + 2750^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213332109 - 2²⁴ = 20196554893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213322109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106666054 + 10106666055.

It is an arithmetic number, because the mean of its divisors is an integer number (10106666055).

Almost surely, 2^20213332109 is an apocalyptic number.

It is an amenable number.

20213332109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213332109 is an equidigital number, since it uses as much as digits as its factorization.

20213332109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 20213332109 in words is "twenty billion, two hundred thirteen million, three hundred thirty-two thousand, one hundred nine".