2122319988 has 96 divisors (see below), whose sum is σ = 5857488000. Its totient is φ = 662618880.

The previous prime is 2122319981. The next prime is 2122320029. The reversal of 2122319988 is 8899132212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122319981) 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, 176818 + ... + 188438.

It is an arithmetic number, because the mean of its divisors is an integer number (61015500).

Almost surely, 2^2122319988 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 2122319988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2928744000).

2122319988 is an abundant number, since it is smaller than the sum of its proper divisors (3735168012).

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

2122319988 is a wasteful number, since it uses less digits than its factorization.

2122319988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11742 (or 11734 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 2122319988 is about 46068.6443039081. The cubic root of 2122319988 is about 1285.1000922301.

The spelling of 2122319988 in words is "two billion, one hundred twenty-two million, three hundred nineteen thousand, nine hundred eighty-eight".