1122131212120 has 128 divisors (see below), whose sum is σ = 2852563780800. Its totient is φ = 394732486656.

The previous prime is 1122131212093. The next prime is 1122131212123. The reversal of 1122131212120 is 212121312211.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122131212123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348282 + ... + 1538038.

Almost surely, 2^{1122131212120} is an apocalyptic number.

1122131212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122131212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426281890400).

1122131212120 is an abundant number, since it is smaller than the sum of its proper divisors (1730432568680).

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

1122131212120 is a wasteful number, since it uses less digits than its factorization.

1122131212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189877 (or 1189873 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1122131212120 its reverse (212121312211), we get a palindrome (1334252524331).

The spelling of 1122131212120 in words is "one trillion, one hundred twenty-two billion, one hundred thirty-one million, two hundred twelve thousand, one hundred twenty".