22113135312 has 80 divisors (see below), whose sum is σ = 57795586560. Its totient is φ = 7284923776.

The previous prime is 22113135307. The next prime is 22113135349. The reversal of 22113135312 is 21353131122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2270389 + ... + 2280107.

It is an arithmetic number, because the mean of its divisors is an integer number (722444832).

Almost surely, 2^22113135312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22113135312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28897793280).

22113135312 is an abundant number, since it is smaller than the sum of its proper divisors (35682451248).

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

22113135312 is a wasteful number, since it uses less digits than its factorization.

22113135312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280 (or 10274 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

Adding to 22113135312 its reverse (21353131122), we get a palindrome (43466266434).

The spelling of 22113135312 in words is "twenty-two billion, one hundred thirteen million, one hundred thirty-five thousand, three hundred twelve".