1122100120 has 16 divisors (see below), whose sum is σ = 2524725360. Its totient is φ = 448840032.

The previous prime is 1122100069. The next prime is 1122100139. The reversal of 1122100120 is 210012211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1122100097 and 1122100106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14026212 + ... + 14026291.

It is an arithmetic number, because the mean of its divisors is an integer number (157795335).

Almost surely, 2^1122100120 is an apocalyptic number.

1122100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122100120 is an abundant number, since it is smaller than the sum of its proper divisors (1402625240).

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

1122100120 is a wasteful number, since it uses less digits than its factorization.

1122100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28052514 (or 28052510 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1122100120 is about 33497.7629103796. The cubic root of 1122100120 is about 1039.1475139343.

Adding to 1122100120 its reverse (210012211), we get a palindrome (1332112331).

The spelling of 1122100120 in words is "one billion, one hundred twenty-two million, one hundred thousand, one hundred twenty".