22231851930 has 96 divisors (see below), whose sum is σ = 60880248000. Its totient is φ = 5613221376.

The previous prime is 22231851899. The next prime is 22231851937. The reversal of 22231851930 is 3915813222.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22231851937) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4612882 + ... + 4617698.

It is an arithmetic number, because the mean of its divisors is an integer number (634169250).

Almost surely, 2^22231851930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22231851930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30440124000).

22231851930 is an abundant number, since it is smaller than the sum of its proper divisors (38648396070).

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

22231851930 is a wasteful number, since it uses less digits than its factorization.

22231851930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7548 (or 7545 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 22231851930 in words is "twenty-two billion, two hundred thirty-one million, eight hundred fifty-one thousand, nine hundred thirty".