22001251488 has 96 divisors (see below), whose sum is σ = 61212594240. Its totient is φ = 6895349760.

The previous prime is 22001251487. The next prime is 22001251499. The reversal of 22001251488 is 88415210022.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (22001251483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738303 + ... + 1750913.

It is an arithmetic number, because the mean of its divisors is an integer number (637631190).

Almost surely, 2^22001251488 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 22001251488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30606297120).

22001251488 is an abundant number, since it is smaller than the sum of its proper divisors (39211342752).

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

22001251488 is a wasteful number, since it uses less digits than its factorization.

22001251488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13710 (or 13702 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The spelling of 22001251488 in words is "twenty-two billion, one million, two hundred fifty-one thousand, four hundred eighty-eight".