22121112132 has 108 divisors (see below), whose sum is σ = 67874841216. Its totient is φ = 6045510240.

The previous prime is 22121112119. The next prime is 22121112133. The reversal of 22121112132 is 23121112122.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22121112133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 232044 + ... + 313187.

It is an arithmetic number, because the mean of its divisors is an integer number (628470752).

Almost surely, 2^22121112132 is an apocalyptic number.

It is an amenable number.

22121112132 is an abundant number, since it is smaller than the sum of its proper divisors (45753729084).

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

22121112132 is a wasteful number, since it uses less digits than its factorization.

22121112132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545278 (or 545266 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 22121112132 its reverse (23121112122), we get a palindrome (45242224254).

The spelling of 22121112132 in words is "twenty-two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred thirty-two".