1151112331100 has 72 divisors (see below), whose sum is σ = 2508578190720. Its totient is φ = 458483346880.

The previous prime is 1151112330989. The next prime is 1151112331123. The reversal of 1151112331100 is 11332111511.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22257071 + ... + 22308729.

It is an arithmetic number, because the mean of its divisors is an integer number (34841363760).

Almost surely, 2^{1151112331100} is an apocalyptic number.

1151112331100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151112331100 is an abundant number, since it is smaller than the sum of its proper divisors (1357465859620).

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

1151112331100 is a wasteful number, since it uses less digits than its factorization.

1151112331100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52619 (or 52612 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 20.

Adding to 1151112331100 its reverse (11332111511), we get a palindrome (1162444442611).

The spelling of 1151112331100 in words is "one trillion, one hundred fifty-one billion, one hundred twelve million, three hundred thirty-one thousand, one hundred".