102012112091 has 8 divisors (see below), whose sum is σ = 103747826160. Its totient is φ = 100276621312.

The previous prime is 102012112067. The next prime is 102012112099. The reversal of 102012112091 is 190211210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102012112091 - 2³⁴ = 84832242907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102012112099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050491 + ... + 1143483.

It is an arithmetic number, because the mean of its divisors is an integer number (12968478270).

Almost surely, 2^102012112091 is an apocalyptic number.

102012112091 is a deficient number, since it is larger than the sum of its proper divisors (1735714069).

102012112091 is an equidigital number, since it uses as much as digits as its factorization.

102012112091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111645.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 102012112091 its reverse (190211210201), we get a palindrome (292223322292).

The spelling of 102012112091 in words is "one hundred two billion, twelve million, one hundred twelve thousand, ninety-one".