20102100122209 has 64 divisors (see below), whose sum is σ = 24732015897600. Its totient is φ = 15948173058048.

The previous prime is 20102100122189. The next prime is 20102100122219. The reversal of 20102100122209 is 90222100120102.

It is not a de Polignac number, because 20102100122209 - 2⁷ = 20102100122081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20102100122209.

It is not an unprimeable number, because it can be changed into a prime (20102100122219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1384530252 + ... + 1384544770.

It is an arithmetic number, because the mean of its divisors is an integer number (386437748400).

Almost surely, 2^{20102100122209} is an apocalyptic number.

It is an amenable number.

20102100122209 is a deficient number, since it is larger than the sum of its proper divisors (4629915775391).

20102100122209 is a wasteful number, since it uses less digits than its factorization.

20102100122209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15442.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 20102100122209 in words is "twenty trillion, one hundred two billion, one hundred million, one hundred twenty-two thousand, two hundred nine".