111512100222 has 32 divisors (see below), whose sum is σ = 249237084960. Its totient is φ = 36955837440.

The previous prime is 111512100221. The next prime is 111512100229. The reversal of 111512100222 is 222001215111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111512100195 and 111512100204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111512100221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5958979 + ... + 5977662.

It is an arithmetic number, because the mean of its divisors is an integer number (7788658905).

Almost surely, 2^111512100222 is an apocalyptic number.

111512100222 is an abundant number, since it is smaller than the sum of its proper divisors (137724984738).

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

111512100222 is a wasteful number, since it uses less digits than its factorization.

111512100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11936825 (or 11936819 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 111512100222 its reverse (222001215111), we get a palindrome (333513315333).

The spelling of 111512100222 in words is "one hundred eleven billion, five hundred twelve million, one hundred thousand, two hundred twenty-two".