1121000022 has 24 divisors (see below), whose sum is σ = 2429777376. Its totient is φ = 373521456.

The previous prime is 1121000011. The next prime is 1121000081. The reversal of 1121000022 is 2200001211.

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

It is a junction number, because it is equal to n+sod(n) for n = 1120999968 and 1121000013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42048 + ... + 63324.

It is an arithmetic number, because the mean of its divisors is an integer number (101240724).

Almost surely, 2^1121000022 is an apocalyptic number.

1121000022 is an abundant number, since it is smaller than the sum of its proper divisors (1308777354).

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

1121000022 is a wasteful number, since it uses less digits than its factorization.

1121000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24212 (or 24209 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1121000022 is about 33481.3384141076. The cubic root of 1121000022 is about 1038.8078122541.

Adding to 1121000022 its reverse (2200001211), we get a palindrome (3321001233).

The spelling of 1121000022 in words is "one billion, one hundred twenty-one million, twenty-two", and thus it is an aban number.