11111210022 has 48 divisors (see below), whose sum is σ = 24496844400. Its totient is φ = 3357309120.

The previous prime is 11111210009. The next prime is 11111210041. The reversal of 11111210022 is 22001211111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231448 + ... + 275300.

It is an arithmetic number, because the mean of its divisors is an integer number (510350925).

Almost surely, 2^11111210022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111210022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12248422200).

11111210022 is an abundant number, since it is smaller than the sum of its proper divisors (13385634378).

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

11111210022 is a wasteful number, since it uses less digits than its factorization.

11111210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44229 (or 44218 counting only the distinct ones).

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

Adding to 11111210022 its reverse (22001211111), we get a palindrome (33112421133).

The spelling of 11111210022 in words is "eleven billion, one hundred eleven million, two hundred ten thousand, twenty-two".