1212302131213 has 4 divisors (see below), whose sum is σ = 1276107506560. Its totient is φ = 1148496755868.

The previous prime is 1212302131189. The next prime is 1212302131231. The reversal of 1212302131213 is 3121312032121.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212302131213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212302131273) 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, 31902687645 + ... + 31902687682.

It is an arithmetic number, because the mean of its divisors is an integer number (319026876640).

Almost surely, 2^{1212302131213} is an apocalyptic number.

It is an amenable number.

1212302131213 is a deficient number, since it is larger than the sum of its proper divisors (63805375347).

1212302131213 is an equidigital number, since it uses as much as digits as its factorization.

1212302131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63805375346.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1212302131213 its reverse (3121312032121), we get a palindrome (4333614163334).

The spelling of 1212302131213 in words is "one trillion, two hundred twelve billion, three hundred two million, one hundred thirty-one thousand, two hundred thirteen".