111121213120 has 28 divisors (see below), whose sum is σ = 264607389504. Its totient is φ = 44448485120.

The previous prime is 111121213111. The next prime is 111121213163. The reversal of 111121213120 is 21312121111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 111121213094 and 111121213103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173626576 + ... + 173627215.

Almost surely, 2^111121213120 is an apocalyptic number.

111121213120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121213120 is an abundant number, since it is smaller than the sum of its proper divisors (153486176384).

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

111121213120 is an equidigital number, since it uses as much as digits as its factorization.

111121213120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347253808 (or 347253798 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111121213120 its reverse (21312121111), we get a palindrome (132433334231).

The spelling of 111121213120 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred thirteen thousand, one hundred twenty".