209120792101 has 16 divisors (see below), whose sum is σ = 238651056000. Its totient is φ = 181647482688.

The previous prime is 209120792077. The next prime is 209120792107. The reversal of 209120792101 is 101297021902.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 209120792101 - 2¹⁵ = 209120759333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209120792107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2804281 + ... + 2877886.

It is an arithmetic number, because the mean of its divisors is an integer number (14915691000).

Almost surely, 2^209120792101 is an apocalyptic number.

It is an amenable number.

209120792101 is a deficient number, since it is larger than the sum of its proper divisors (29530263899).

209120792101 is a wasteful number, since it uses less digits than its factorization.

209120792101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682348.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 209120792101 in words is "two hundred nine billion, one hundred twenty million, seven hundred ninety-two thousand, one hundred one".