1000111122 has 24 divisors (see below), whose sum is σ = 2294373276. Its totient is φ = 313760256.

The previous prime is 1000111121. The next prime is 1000111129. The reversal of 1000111122 is 2211110001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 957221721 + 42889401 = 30939^2 + 6549^2 .

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 (1000111121) 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, 1633863 + ... + 1634474.

Almost surely, 2^1000111122 is an apocalyptic number.

1000111122 is an abundant number, since it is smaller than the sum of its proper divisors (1294262154).

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

1000111122 is a wasteful number, since it uses less digits than its factorization.

1000111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268362 (or 3268359 counting only the distinct ones).

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

The square root of 1000111122 is about 31624.5335459671. The cubic root of 1000111122 is about 1000.0370392947.

Adding to 1000111122 its reverse (2211110001), we get a palindrome (3211221123).

The spelling of 1000111122 in words is "one billion, one hundred eleven thousand, one hundred twenty-two".