990120120120112 has 80 divisors (see below), whose sum is σ = 1983426797060352. Its totient is φ = 478319930081280.

The previous prime is 990120120120059. The next prime is 990120120120191. The reversal of 990120120120112 is 211021021021099.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 971323728 + ... + 972342544.

Almost surely, 2^{990120120120112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990120120120112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991713398530176).

990120120120112 is an abundant number, since it is smaller than the sum of its proper divisors (993306676940240).

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

990120120120112 is a wasteful number, since it uses less digits than its factorization.

990120120120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022006 (or 1022000 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 990120120120112 in words is "nine hundred ninety trillion, one hundred twenty billion, one hundred twenty million, one hundred twenty thousand, one hundred twelve".