11121200992 has 72 divisors (see below), whose sum is σ = 25333068600. Its totient is φ = 4789002240.

The previous prime is 11121200957. The next prime is 11121201023. The reversal of 11121200992 is 29900212111.

It is a super-2 number, since 2×11121200992² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11121200992.

It is a congruent number.

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, 2017 + ... + 149152.

It is an arithmetic number, because the mean of its divisors is an integer number (351848175).

Almost surely, 2^11121200992 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 11121200992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12666534300).

11121200992 is an abundant number, since it is smaller than the sum of its proper divisors (14211867608).

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

11121200992 is a wasteful number, since it uses less digits than its factorization.

11121200992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151220 (or 151201 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 11121200992 in words is "eleven billion, one hundred twenty-one million, two hundred thousand, nine hundred ninety-two".