116021091 has 4 divisors (see below), whose sum is σ = 154694792. Its totient is φ = 77347392.

The previous prime is 116021089. The next prime is 116021099. The reversal of 116021091 is 190120611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190120611 = 3 ⋅63373537.

It is not a de Polignac number, because 116021091 - 2¹ = 116021089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116021099) 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, 19336846 + ... + 19336851.

It is an arithmetic number, because the mean of its divisors is an integer number (38673698).

Almost surely, 2^116021091 is an apocalyptic number.

116021091 is a deficient number, since it is larger than the sum of its proper divisors (38673701).

116021091 is an equidigital number, since it uses as much as digits as its factorization.

116021091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38673700.

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 116021091 is about 10771.3086948615. The cubic root of 116021091 is about 487.7294520130.

The spelling of 116021091 in words is "one hundred sixteen million, twenty-one thousand, ninety-one".