1212131033 has 4 divisors (see below), whose sum is σ = 1212219648. Its totient is φ = 1212042420.

The previous prime is 1212131029. The next prime is 1212131051. The reversal of 1212131033 is 3301312121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3301312121 = 29 ⋅113838349.

It is a cyclic number.

It is not a de Polignac number, because 1212131033 - 2² = 1212131029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212131003) 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 3 ways as a sum of consecutive naturals, for example, 18953 + ... + 52758.

It is an arithmetic number, because the mean of its divisors is an integer number (303054912).

Almost surely, 2^1212131033 is an apocalyptic number.

It is an amenable number.

1212131033 is a deficient number, since it is larger than the sum of its proper divisors (88615).

1212131033 is an equidigital number, since it uses as much as digits as its factorization.

1212131033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88614.

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

The square root of 1212131033 is about 34815.6722324875. The cubic root of 1212131033 is about 1066.2274438508.

Adding to 1212131033 its reverse (3301312121), we get a palindrome (4513443154).

The spelling of 1212131033 in words is "one billion, two hundred twelve million, one hundred thirty-one thousand, thirty-three".