1111000000122 has 24 divisors (see below), whose sum is σ = 2407278103776. Its totient is φ = 370316189256.

The previous prime is 1111000000091. The next prime is 1111000000127. The reversal of 1111000000122 is 2210000001111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1111000000127) 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, 1025988 + ... + 1809599.

It is an arithmetic number, because the mean of its divisors is an integer number (100303254324).

Almost surely, 2^{1111000000122} is an apocalyptic number.

1111000000122 is an abundant number, since it is smaller than the sum of its proper divisors (1296278103654).

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

1111000000122 is a wasteful number, since it uses less digits than its factorization.

1111000000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857362 (or 2857359 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1111000000122 its reverse (2210000001111), we get a palindrome (3321000001233).

The spelling of 1111000000122 in words is "one trillion, one hundred eleven billion, one hundred twenty-two", and thus it is an aban number.