1112121101988 has 60 divisors (see below), whose sum is σ = 3130943038300. Its totient is φ = 342191107008.

The previous prime is 1112121101983. The next prime is 1112121101989. The reversal of 1112121101988 is 8891011212111.

It can be written as a sum of positive squares in 2 ways, for example, as 615798033984 + 496323068004 = 784728^2 + 704502^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1112121101983) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 132013963 + ... + 132022386.

Almost surely, 2^{1112121101988} is an apocalyptic number.

1112121101988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1112121101988 is an abundant number, since it is smaller than the sum of its proper divisors (2018821936312).

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

1112121101988 is a wasteful number, since it uses less digits than its factorization.

1112121101988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264036378 (or 264036367 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 36.

The spelling of 1112121101988 in words is "one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred one thousand, nine hundred eighty-eight".