81122422118 has 8 divisors (see below), whose sum is σ = 121685004648. Its totient is φ = 40560753904.

The previous prime is 81122422103. The next prime is 81122422123.

81122422118 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72605 + ... + 409287.

It is an arithmetic number, because the mean of its divisors is an integer number (15210625581).

Almost surely, 2^81122422118 is an apocalyptic number.

81122422118 is a deficient number, since it is larger than the sum of its proper divisors (40562582530).

81122422118 is a wasteful number, since it uses less digits than its factorization.

81122422118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457158.

The product of its digits is 4096, while the sum is 32.

The spelling of 81122422118 in words is "eighty-one billion, one hundred twenty-two million, four hundred twenty-two thousand, one hundred eighteen".