1212132133 has 4 divisors (see below), whose sum is σ = 1212201900. Its totient is φ = 1212062368.

The previous prime is 1212132121. The next prime is 1212132143. The reversal of 1212132133 is 3312312121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 668636164 + 543495969 = 25858^2 + 23313^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212132133 - 2⁹ = 1212131621 is a prime.

It is a super-2 number, since 2×1212132133² = 2938528615702259378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212132133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212132143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14193 + ... + 51241.

It is an arithmetic number, because the mean of its divisors is an integer number (303050475).

Almost surely, 2^1212132133 is an apocalyptic number.

It is an amenable number.

1212132133 is a deficient number, since it is larger than the sum of its proper divisors (69767).

1212132133 is an equidigital number, since it uses as much as digits as its factorization.

1212132133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69766.

The product of its digits is 216, while the sum is 19.

The square root of 1212132133 is about 34815.6880299672. The cubic root of 1212132133 is about 1066.2277663819.

Adding to 1212132133 its reverse (3312312121), we get a palindrome (4524444254).

The spelling of 1212132133 in words is "one billion, two hundred twelve million, one hundred thirty-two thousand, one hundred thirty-three".