1133212120 has 64 divisors (see below), whose sum is σ = 2702095200. Its totient is φ = 426961920.

The previous prime is 1133212111. The next prime is 1133212121. The reversal of 1133212120 is 212123311.

It is a junction number, because it is equal to n+sod(n) for n = 1133212094 and 1133212103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133212121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35647 + ... + 59473.

Almost surely, 2^1133212120 is an apocalyptic number.

1133212120 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 1133212120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351047600).

1133212120 is an abundant number, since it is smaller than the sum of its proper divisors (1568883080).

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

1133212120 is a wasteful number, since it uses less digits than its factorization.

1133212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23908 (or 23904 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1133212120 is about 33663.2161268052. The cubic root of 1133212120 is about 1042.5664302931.

Adding to 1133212120 its reverse (212123311), we get a palindrome (1345335431).

The spelling of 1133212120 in words is "one billion, one hundred thirty-three million, two hundred twelve thousand, one hundred twenty".