111101212120 has 32 divisors (see below), whose sum is σ = 258597651600. Its totient is φ = 42908053888.

The previous prime is 111101212111. The next prime is 111101212133. The reversal of 111101212120 is 21212101111.

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 111101212120.

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, 47887294 + ... + 47889613.

Almost surely, 2^111101212120 is an apocalyptic number.

111101212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101212120 is an abundant number, since it is smaller than the sum of its proper divisors (147496439480).

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

111101212120 is a wasteful number, since it uses less digits than its factorization.

111101212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95776947 (or 95776943 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111101212120 its reverse (21212101111), we get a palindrome (132313313231).

The spelling of 111101212120 in words is "one hundred eleven billion, one hundred one million, two hundred twelve thousand, one hundred twenty".