22251112240 has 160 divisors (see below), whose sum is σ = 60954384384. Its totient is φ = 7395916800.

The previous prime is 22251112229. The next prime is 22251112243. The reversal of 22251112240 is 4221115222.

It is a super-2 number, since 2×22251112240² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22251112243) 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, 2812290 + ... + 2820190.

Almost surely, 2^22251112240 is an apocalyptic number.

22251112240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22251112240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30477192192).

22251112240 is an abundant number, since it is smaller than the sum of its proper divisors (38703272144).

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

22251112240 is a wasteful number, since it uses less digits than its factorization.

22251112240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8075 (or 8069 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 22251112240 its reverse (4221115222), we get a palindrome (26472227462).

The spelling of 22251112240 in words is "twenty-two billion, two hundred fifty-one million, one hundred twelve thousand, two hundred forty".