111122001992 has 16 divisors (see below), whose sum is σ = 208361905200. Its totient is φ = 55558827280.

The previous prime is 111122001973. The next prime is 111122001997. The reversal of 111122001992 is 299100221111.

It is not an unprimeable number, because it can be changed into a prime (111122001997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43142 + ... + 473397.

It is an arithmetic number, because the mean of its divisors is an integer number (13022619075).

Almost surely, 2^111122001992 is an apocalyptic number.

It is an amenable number.

111122001992 is a deficient number, since it is larger than the sum of its proper divisors (97239903208).

111122001992 is a wasteful number, since it uses less digits than its factorization.

111122001992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543436 (or 543432 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 111122001992 in words is "one hundred eleven billion, one hundred twenty-two million, one thousand, nine hundred ninety-two".