1122001992 has 48 divisors (see below), whose sum is σ = 3041335440. Its totient is φ = 373683168.

The previous prime is 1122001987. The next prime is 1122002009. The reversal of 1122001992 is 2991002211.

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, 88143 + ... + 100065.

It is an arithmetic number, because the mean of its divisors is an integer number (63361155).

Almost surely, 2^1122001992 is an apocalyptic number.

1122001992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122001992 is an abundant number, since it is smaller than the sum of its proper divisors (1919333448).

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

1122001992 is a wasteful number, since it uses less digits than its factorization.

1122001992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13242 (or 13235 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1122001992 is about 33496.2981835307. The cubic root of 1122001992 is about 1039.1172217949.

The spelling of 1122001992 in words is "one billion, one hundred twenty-two million, one thousand, nine hundred ninety-two".