11111020222122 has 24 divisors (see below), whose sum is σ = 24965502228576. Its totient is φ = 3703673407212.

The previous prime is 11111020222111. The next prime is 11111020222123. The reversal of 11111020222122 is 22122202011111.

11111020222122 is a `hidden beast` number, since 111 + 110 + 202 + 221 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11111020222095 and 11111020222104.

It is not an unprimeable number, because it can be changed into a prime (11111020222123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11431090278 + ... + 11431091249.

It is an arithmetic number, because the mean of its divisors is an integer number (1040229259524).

Almost surely, 2^{11111020222122} is an apocalyptic number.

11111020222122 is an abundant number, since it is smaller than the sum of its proper divisors (13854482006454).

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

11111020222122 is an equidigital number, since it uses as much as digits as its factorization.

11111020222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22862181544 (or 22862181532 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11111020222122 its reverse (22122202011111), we get a palindrome (33233222233233).

The spelling of 11111020222122 in words is "eleven trillion, one hundred eleven billion, twenty million, two hundred twenty-two thousand, one hundred twenty-two".