22121011110 has 64 divisors (see below), whose sum is σ = 58010929920. Its totient is φ = 5353956480.

The previous prime is 22121011103. The next prime is 22121011151. The reversal of 22121011110 is 1111012122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150124 + ... + 258416.

It is an arithmetic number, because the mean of its divisors is an integer number (906420780).

Almost surely, 2^22121011110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22121011110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29005464960).

22121011110 is an abundant number, since it is smaller than the sum of its proper divisors (35889918810).

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

22121011110 is a wasteful number, since it uses less digits than its factorization.

22121011110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108933.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 22121011110 its reverse (1111012122), we get a palindrome (23232023232).

The spelling of 22121011110 in words is "twenty-two billion, one hundred twenty-one million, eleven thousand, one hundred ten".