1213245114533 has 4 divisors (see below), whose sum is σ = 1213997282988. Its totient is φ = 1212492946080.

The previous prime is 1213245114493. The next prime is 1213245114583. The reversal of 1213245114533 is 3354115423121.

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 329272835329 + 883972279204 = 573823^2 + 940198^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213245114533 - 2²⁸ = 1212976679077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213245114493 and 1213245114502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213245114583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376081808 + ... + 376085033.

It is an arithmetic number, because the mean of its divisors is an integer number (303499320747).

Almost surely, 2^{1213245114533} is an apocalyptic number.

It is an amenable number.

1213245114533 is a deficient number, since it is larger than the sum of its proper divisors (752168455).

1213245114533 is an equidigital number, since it uses as much as digits as its factorization.

1213245114533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752168454.

The product of its digits is 43200, while the sum is 35.

The spelling of 1213245114533 in words is "one trillion, two hundred thirteen billion, two hundred forty-five million, one hundred fourteen thousand, five hundred thirty-three".