111213404022 has 64 divisors (see below), whose sum is σ = 263762325504. Its totient is φ = 30590853120.

The previous prime is 111213404017. The next prime is 111213404047. The reversal of 111213404022 is 220404312111.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 111213404022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29998 + ... + 472574.

It is an arithmetic number, because the mean of its divisors is an integer number (4121286336).

Almost surely, 2^111213404022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111213404022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131881162752).

111213404022 is an abundant number, since it is smaller than the sum of its proper divisors (152548921482).

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

111213404022 is a wasteful number, since it uses less digits than its factorization.

111213404022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442813.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 111213404022 its reverse (220404312111), we get a palindrome (331617716133).

It can be divided in two parts, 11121 and 3404022, that added together give a palindrome (3415143).

The spelling of 111213404022 in words is "one hundred eleven billion, two hundred thirteen million, four hundred four thousand, twenty-two".