111212122110022 has 32 divisors (see below), whose sum is σ = 177992819596800. Its totient is φ = 51964986820608.

The previous prime is 111212122109983. The next prime is 111212122110049. The reversal of 111212122110022 is 220011221212111.

It is a happy number.

It is a super-2 number, since 2×111212122110022² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54274122 + ... + 56285917.

It is an arithmetic number, because the mean of its divisors is an integer number (5562275612400).

Almost surely, 2^{111212122110022} is an apocalyptic number.

111212122110022 is a deficient number, since it is larger than the sum of its proper divisors (66780697486778).

111212122110022 is a wasteful number, since it uses less digits than its factorization.

111212122110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110560420.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111212122110022 its reverse (220011221212111), we get a palindrome (331223343322133).

The spelling of 111212122110022 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty-two million, one hundred ten thousand, twenty-two".