22231122000 has 80 divisors (see below), whose sum is σ = 71673156672. Its totient is φ = 5928297600.

The previous prime is 22231121999. The next prime is 22231122013. The reversal of 22231122000 is 22113222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846594 + ... + 1858593.

Almost surely, 2^22231122000 is an apocalyptic number.

22231122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22231122000 is an abundant number, since it is smaller than the sum of its proper divisors (49442034672).

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

22231122000 is a wasteful number, since it uses less digits than its factorization.

22231122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705213 (or 3705197 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22231122000 its reverse (22113222), we get a palindrome (22253235222).

The spelling of 22231122000 in words is "twenty-two billion, two hundred thirty-one million, one hundred twenty-two thousand".