11212012220022 has 24 divisors (see below), whose sum is σ = 24301627671360. Its totient is φ = 3735962863920.

The previous prime is 11212012219987. The next prime is 11212012220069. The reversal of 11212012220022 is 22002221021211.

It is a happy number.

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 = 11212012219977 and 11212012220004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114494929 + ... + 114592812.

It is an arithmetic number, because the mean of its divisors is an integer number (1012567819640).

Almost surely, 2^{11212012220022} is an apocalyptic number.

11212012220022 is an abundant number, since it is smaller than the sum of its proper divisors (13089615451338).

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

11212012220022 is a wasteful number, since it uses less digits than its factorization.

11212012220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229090468 (or 229090465 counting only the distinct ones).

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

Adding to 11212012220022 its reverse (22002221021211), we get a palindrome (33214233241233).

The spelling of 11212012220022 in words is "eleven trillion, two hundred twelve billion, twelve million, two hundred twenty thousand, twenty-two".