1121131212 has 12 divisors (see below), whose sum is σ = 2615972856. Its totient is φ = 373710400.

The previous prime is 1121131201. The next prime is 1121131223. The reversal of 1121131212 is 2121311211.

It is an interprime number because it is at equal distance from previous prime (1121131201) and next prime (1121131223).

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1121131191 and 1121131200.

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, 46713789 + ... + 46713812.

It is an arithmetic number, because the mean of its divisors is an integer number (217997738).

Almost surely, 2^1121131212 is an apocalyptic number.

1121131212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121131212 is an abundant number, since it is smaller than the sum of its proper divisors (1494841644).

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

1121131212 is a wasteful number, since it uses less digits than its factorization.

1121131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93427608 (or 93427606 counting only the distinct ones).

The product of its digits is 24, while the sum is 15.

The square root of 1121131212 is about 33483.2975078620. The cubic root of 1121131212 is about 1038.8483343708.

Adding to 1121131212 its reverse (2121311211), we get a palindrome (3242442423).

The spelling of 1121131212 in words is "one billion, one hundred twenty-one million, one hundred thirty-one thousand, two hundred twelve".