1212031133 has 8 divisors (see below), whose sum is σ = 1327580280. Its totient is φ = 1101399040.

The previous prime is 1212031127. The next prime is 1212031141. The reversal of 1212031133 is 3311302121.

It can be written as a sum of positive squares in 4 ways, for example, as 139665124 + 1072366009 = 11818^2 + 32747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212031133 - 2¹⁸ = 1211768989 is a prime.

It is a super-2 number, since 2×1212031133² = 2938038934722527378, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212031123) 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, 1228748 + ... + 1229733.

It is an arithmetic number, because the mean of its divisors is an integer number (165947535).

Almost surely, 2^1212031133 is an apocalyptic number.

It is an amenable number.

1212031133 is a deficient number, since it is larger than the sum of its proper divisors (115549147).

1212031133 is a wasteful number, since it uses less digits than its factorization.

1212031133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458527.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1212031133 is about 34814.2375042166. The cubic root of 1212031133 is about 1066.1981513499.

Adding to 1212031133 its reverse (3311302121), we get a palindrome (4523333254).

The spelling of 1212031133 in words is "one billion, two hundred twelve million, thirty-one thousand, one hundred thirty-three".