116212881 has 4 divisors (see below), whose sum is σ = 154950512. Its totient is φ = 77475252.

The previous prime is 116212879. The next prime is 116212897. The reversal of 116212881 is 188212611.

It is a happy number.

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 not a de Polignac number, because 116212881 - 2¹ = 116212879 is a prime.

It is a super-2 number, since 2×116212881² = 27010867420640322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116212801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19368811 + ... + 19368816.

It is an arithmetic number, because the mean of its divisors is an integer number (38737628).

Almost surely, 2^116212881 is an apocalyptic number.

It is an amenable number.

116212881 is a deficient number, since it is larger than the sum of its proper divisors (38737631).

116212881 is an equidigital number, since it uses as much as digits as its factorization.

116212881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38737630.

The product of its digits is 1536, while the sum is 30.

The square root of 116212881 is about 10780.2078365865. The cubic root of 116212881 is about 487.9980529910.

The spelling of 116212881 in words is "one hundred sixteen million, two hundred twelve thousand, eight hundred eighty-one".