111212310222 has 24 divisors (see below), whose sum is σ = 259495391064. Its totient is φ = 34219172304.

The previous prime is 111212310203. The next prime is 111212310233. The reversal of 111212310222 is 222013212111.

111212310222 is a `hidden beast` number, since 11 + 121 + 2 + 310 + 222 = 666.

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 = 111212310195 and 111212310204.

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, 237632908 + ... + 237633375.

It is an arithmetic number, because the mean of its divisors is an integer number (10812307961).

Almost surely, 2^111212310222 is an apocalyptic number.

111212310222 is an abundant number, since it is smaller than the sum of its proper divisors (148283080842).

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

111212310222 is a wasteful number, since it uses less digits than its factorization.

111212310222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475266304 (or 475266301 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111212310222 its reverse (222013212111), we get a palindrome (333225522333).

The spelling of 111212310222 in words is "one hundred eleven billion, two hundred twelve million, three hundred ten thousand, two hundred twenty-two".