201102002109 has 6 divisors (see below), whose sum is σ = 290480669726. Its totient is φ = 134068001400.

The previous prime is 201102002099. The next prime is 201102002137. The reversal of 201102002109 is 901200201102.

It can be written as a sum of positive squares in only one way, i.e., 199299744900 + 1802257209 = 446430^2 + 42453^2 .

It is not a de Polignac number, because 201102002109 - 2⁴ = 201102002093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201102002091 and 201102002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102002209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11172333442 + ... + 11172333459.

Almost surely, 2^201102002109 is an apocalyptic number.

It is an amenable number.

201102002109 is a deficient number, since it is larger than the sum of its proper divisors (89378667617).

201102002109 is a wasteful number, since it uses less digits than its factorization.

201102002109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22344666907 (or 22344666904 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 201102002109 in words is "two hundred one billion, one hundred two million, two thousand, one hundred nine".