22111989552 has 160 divisors (see below), whose sum is σ = 64680066560. Its totient is φ = 7230746880.

The previous prime is 22111989551. The next prime is 22111989553. The reversal of 22111989552 is 25598911122.

It is a happy number.

22111989552 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 1 + 98 + 9 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (22111989551) and next prime (22111989553).

It is a junction number, because it is equal to n+sod(n) for n = 22111989498 and 22111989507.

It is not an unprimeable number, because it can be changed into a prime (22111989551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12832563 + ... + 12834285.

It is an arithmetic number, because the mean of its divisors is an integer number (404250416).

Almost surely, 2^22111989552 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 22111989552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32340033280).

22111989552 is an abundant number, since it is smaller than the sum of its proper divisors (42568077008).

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

22111989552 is a wasteful number, since it uses less digits than its factorization.

22111989552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 2276 counting only the distinct ones).

The product of its digits is 129600, while the sum is 45.

The spelling of 22111989552 in words is "twenty-two billion, one hundred eleven million, nine hundred eighty-nine thousand, five hundred fifty-two".