11131120988 has 24 divisors (see below), whose sum is σ = 20995671312. Its totient is φ = 5133083904.

The previous prime is 11131120969. The next prime is 11131120993. The reversal of 11131120988 is 88902113111.

It is a super-2 number, since 2×11131120988² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28445 + ... + 151892.

It is an arithmetic number, because the mean of its divisors is an integer number (874819638).

Almost surely, 2^11131120988 is an apocalyptic number.

It is an amenable number.

11131120988 is a deficient number, since it is larger than the sum of its proper divisors (9864550324).

11131120988 is a wasteful number, since it uses less digits than its factorization.

11131120988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181541 (or 181539 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 35.

The spelling of 11131120988 in words is "eleven billion, one hundred thirty-one million, one hundred twenty thousand, nine hundred eighty-eight".