1213120433 has 8 divisors (see below), whose sum is σ = 1386663168. Its totient is φ = 1039637664.

The previous prime is 1213120387. The next prime is 1213120477. The reversal of 1213120433 is 3340213121.

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 1213120433 - 2¹⁸ = 1212858289 is a prime.

It is a super-2 number, since 2×1213120433² = 2943322369924214978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213120483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43685 + ... + 65837.

It is an arithmetic number, because the mean of its divisors is an integer number (173332896).

Almost surely, 2^1213120433 is an apocalyptic number.

It is an amenable number.

1213120433 is a deficient number, since it is larger than the sum of its proper divisors (173542735).

1213120433 is an equidigital number, since it uses as much as digits as its factorization.

1213120433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29983.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1213120433 is about 34829.8784522714. The cubic root of 1213120433 is about 1066.5174670983.

Adding to 1213120433 its reverse (3340213121), we get a palindrome (4553333554).

The spelling of 1213120433 in words is "one billion, two hundred thirteen million, one hundred twenty thousand, four hundred thirty-three".