11110121992 has 16 divisors (see below), whose sum is σ = 21503462400. Its totient is φ = 5375865360.

The previous prime is 11110121969. The next prime is 11110121993. The reversal of 11110121992 is 29912101111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11110121992.

It is not an unprimeable number, because it can be changed into a prime (11110121993) 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, 22399192 + ... + 22399687.

It is an arithmetic number, because the mean of its divisors is an integer number (1343966400).

Almost surely, 2^11110121992 is an apocalyptic number.

It is an amenable number.

11110121992 is a deficient number, since it is larger than the sum of its proper divisors (10393340408).

11110121992 is a wasteful number, since it uses less digits than its factorization.

11110121992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44798916 (or 44798912 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 11110121992 in words is "eleven billion, one hundred ten million, one hundred twenty-one thousand, nine hundred ninety-two".