117122861 has 4 divisors (see below), whose sum is σ = 117206592. Its totient is φ = 117039132.

The previous prime is 117122857. The next prime is 117122917. The reversal of 117122861 is 168221711.

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 117122861 - 2² = 117122857 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 (117122801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39731 + ... + 42576.

It is an arithmetic number, because the mean of its divisors is an integer number (29301648).

Almost surely, 2^117122861 is an apocalyptic number.

It is an amenable number.

117122861 is a deficient number, since it is larger than the sum of its proper divisors (83731).

117122861 is an equidigital number, since it uses as much as digits as its factorization.

117122861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83730.

The product of its digits is 1344, while the sum is 29.

The square root of 117122861 is about 10822.3315879712. The cubic root of 117122861 is about 489.2684641521.

The spelling of 117122861 in words is "one hundred seventeen million, one hundred twenty-two thousand, eight hundred sixty-one".