1122212120 has 32 divisors (see below), whose sum is σ = 2566375920. Its totient is φ = 441525120.

The previous prime is 1122212093. The next prime is 1122212123. The reversal of 1122212120 is 212122211.

It is a junction number, because it is equal to n+sod(n) for n = 1122212095 and 1122212104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122212123) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 227522 + ... + 232401.

Almost surely, 2^1122212120 is an apocalyptic number.

1122212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122212120 is an abundant number, since it is smaller than the sum of its proper divisors (1444163800).

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

1122212120 is a wasteful number, since it uses less digits than its factorization.

1122212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459995 (or 459991 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1122212120 is about 33499.4346220947. The cubic root of 1122212120 is about 1039.1820862057.

Adding to 1122212120 its reverse (212122211), we get a palindrome (1334334331).

The spelling of 1122212120 in words is "one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty".