22111020022212 has 144 divisors (see below), whose sum is σ = 61183500198912. Its totient is φ = 6677178805440.

The previous prime is 22111020022177. The next prime is 22111020022213. The reversal of 22111020022212 is 21222002011122.

It is a happy number.

22111020022212 is a `hidden beast` number, since 221 + 1 + 10 + 200 + 22 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22111020022213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 244960473 + ... + 245050719.

It is an arithmetic number, because the mean of its divisors is an integer number (424885418048).

Almost surely, 2^{22111020022212} is an apocalyptic number.

22111020022212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22111020022212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30591750099456).

22111020022212 is an abundant number, since it is smaller than the sum of its proper divisors (39072480176700).

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

22111020022212 is a wasteful number, since it uses less digits than its factorization.

22111020022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92398 (or 92393 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22111020022212 its reverse (21222002011122), we get a palindrome (43333022033334).

The spelling of 22111020022212 in words is "twenty-two trillion, one hundred eleven billion, twenty million, twenty-two thousand, two hundred twelve".