111212213022 has 24 divisors (see below), whose sum is σ = 242555561040. Its totient is φ = 36825235200.

The previous prime is 111212213009. The next prime is 111212213051. The reversal of 111212213022 is 220312212111.

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 = 111212212986 and 111212213004.

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, 20455747 + ... + 20461182.

It is an arithmetic number, because the mean of its divisors is an integer number (10106481710).

Almost surely, 2^111212213022 is an apocalyptic number.

111212213022 is an abundant number, since it is smaller than the sum of its proper divisors (131343348018).

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

111212213022 is a wasteful number, since it uses less digits than its factorization.

111212213022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40917088 (or 40917085 counting only the distinct ones).

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

Adding to 111212213022 its reverse (220312212111), we get a palindrome (331524425133).

The spelling of 111212213022 in words is "one hundred eleven billion, two hundred twelve million, two hundred thirteen thousand, twenty-two".