111021212012022 has 160 divisors (see below), whose sum is σ = 279746809816320. Its totient is φ = 32652599601600.

The previous prime is 111021212012021. The next prime is 111021212012027. The reversal of 111021212012022 is 220210212120111.

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 = 111021212011986 and 111021212012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021212012021) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 69493729 + ... + 71073347.

It is an arithmetic number, because the mean of its divisors is an integer number (1748417561352).

Almost surely, 2^{111021212012022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111021212012022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139873404908160).

111021212012022 is an abundant number, since it is smaller than the sum of its proper divisors (168725597804298).

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

111021212012022 is a wasteful number, since it uses less digits than its factorization.

111021212012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581120 (or 1581111 counting only the distinct ones).

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

Adding to 111021212012022 its reverse (220210212120111), we get a palindrome (331231424132133).

The spelling of 111021212012022 in words is "one hundred eleven trillion, twenty-one billion, two hundred twelve million, twelve thousand, twenty-two".