1212023230133 has 4 divisors (see below), whose sum is σ = 1214349570828. Its totient is φ = 1209696889440.

The previous prime is 1212023230079. The next prime is 1212023230153. The reversal of 1212023230133 is 3310323202121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 687212814289 + 524810415844 = 828983^2 + 724438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212023230133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212023230099 and 1212023230108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212023230153) 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, 1163169566 + ... + 1163170607.

It is an arithmetic number, because the mean of its divisors is an integer number (303587392707).

Almost surely, 2^{1212023230133} is an apocalyptic number.

It is an amenable number.

1212023230133 is a deficient number, since it is larger than the sum of its proper divisors (2326340695).

1212023230133 is an equidigital number, since it uses as much as digits as its factorization.

1212023230133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326340694.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1212023230133 its reverse (3310323202121), we get a palindrome (4522346432254).

The spelling of 1212023230133 in words is "one trillion, two hundred twelve billion, twenty-three million, two hundred thirty thousand, one hundred thirty-three".