2117122201 has 4 divisors (see below), whose sum is σ = 2118370000. Its totient is φ = 2115874404.

The previous prime is 2117122199. The next prime is 2117122211. The reversal of 2117122201 is 1022217112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2117122201 - 2¹ = 2117122199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2117122211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621351 + ... + 624748.

It is an arithmetic number, because the mean of its divisors is an integer number (529592500).

Almost surely, 2^2117122201 is an apocalyptic number.

It is an amenable number.

2117122201 is a deficient number, since it is larger than the sum of its proper divisors (1247799).

2117122201 is a wasteful number, since it uses less digits than its factorization.

2117122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247798.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 2117122201 is about 46012.1962201328. The cubic root of 2117122201 is about 1284.0501190715.

Adding to 2117122201 its reverse (1022217112), we get a palindrome (3139339313).

The spelling of 2117122201 in words is "two billion, one hundred seventeen million, one hundred twenty-two thousand, two hundred one".