111212211200022 has 16 divisors (see below), whose sum is σ = 247138247111280. Its totient is φ = 37070737066656.

The previous prime is 111212211200017. The next prime is 111212211200023. The reversal of 111212211200022 is 220002112212111.

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 = 111212211199968 and 111212211200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212211200023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029742696243 + ... + 1029742696350.

It is an arithmetic number, because the mean of its divisors is an integer number (15446140444455).

Almost surely, 2^{111212211200022} is an apocalyptic number.

111212211200022 is an abundant number, since it is smaller than the sum of its proper divisors (135926035911258).

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

111212211200022 is a wasteful number, since it uses less digits than its factorization.

111212211200022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059485392604 (or 2059485392598 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111212211200022 its reverse (220002112212111), we get a palindrome (331214323412133).

The spelling of 111212211200022 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred eleven million, two hundred thousand, twenty-two".