111212151320 has 32 divisors (see below), whose sum is σ = 252137484720. Its totient is φ = 44145279360.

The previous prime is 111212151307. The next prime is 111212151341. The reversal of 111212151320 is 23151212111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111212151292 and 111212151301.

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, 10606607 + ... + 10617086.

Almost surely, 2^111212151320 is an apocalyptic number.

111212151320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212151320 is an abundant number, since it is smaller than the sum of its proper divisors (140925333400).

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

111212151320 is a wasteful number, since it uses less digits than its factorization.

111212151320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21223835 (or 21223831 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 111212151320 its reverse (23151212111), we get a palindrome (134363363431).

The spelling of 111212151320 in words is "one hundred eleven billion, two hundred twelve million, one hundred fifty-one thousand, three hundred twenty".