111121230100 has 36 divisors (see below), whose sum is σ = 241150383964. Its totient is φ = 44445300480.

The previous prime is 111121230089. The next prime is 111121230127. The reversal of 111121230100 is 1032121111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 53670276 + 111067559824 = 7326^2 + 333268^2 .

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, 1766794 + ... + 1828606.

Almost surely, 2^111121230100 is an apocalyptic number.

111121230100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121230100 is an abundant number, since it is smaller than the sum of its proper divisors (130029153864).

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

111121230100 is a wasteful number, since it uses less digits than its factorization.

111121230100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79804 (or 79797 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111121230100 its reverse (1032121111), we get a palindrome (112153351211).

The spelling of 111121230100 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred thirty thousand, one hundred".