18120316122 has 24 divisors (see below), whose sum is σ = 39432137940. Its totient is φ = 6013728000.

The previous prime is 18120316103. The next prime is 18120316139. The reversal of 18120316122 is 22161302181.

18120316122 is a `hidden beast` number, since 1 + 8 + 12 + 0 + 31 + 612 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18085139361 + 35176761 = 134481^2 + 5931^2 .

It is a super-2 number, since 2×18120316122² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2193879 + ... + 2202122.

Almost surely, 2^18120316122 is an apocalyptic number.

18120316122 is an abundant number, since it is smaller than the sum of its proper divisors (21311821818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18120316122 is a wasteful number, since it uses less digits than its factorization.

18120316122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396238 (or 4396235 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 18120316122 in words is "eighteen billion, one hundred twenty million, three hundred sixteen thousand, one hundred twenty-two".