22122211000 has 64 divisors (see below), whose sum is σ = 51821246880. Its totient is φ = 8839436800.

The previous prime is 22122210997. The next prime is 22122211021. The reversal of 22122211000 is 11222122.

It is a happy number.

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, 965679 + ... + 988321.

Almost surely, 2^22122211000 is an apocalyptic number.

22122211000 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 22122211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25910623440).

22122211000 is an abundant number, since it is smaller than the sum of its proper divisors (29699035880).

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

22122211000 is a wasteful number, since it uses less digits than its factorization.

22122211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23641 (or 23627 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22122211000 its reverse (11222122), we get a palindrome (22133433122).

The spelling of 22122211000 in words is "twenty-two billion, one hundred twenty-two million, two hundred eleven thousand".