1213120133313 has 16 divisors (see below), whose sum is σ = 1780153765056. Its totient is φ = 728717911040.

The previous prime is 1213120133293. The next prime is 1213120133317. The reversal of 1213120133313 is 3133310213121.

It is a cyclic number.

It is not a de Polignac number, because 1213120133313 - 2¹⁶ = 1213120067777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213120133317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162656520 + ... + 162663977.

It is an arithmetic number, because the mean of its divisors is an integer number (111259610316).

Almost surely, 2^{1213120133313} is an apocalyptic number.

It is an amenable number.

1213120133313 is a deficient number, since it is larger than the sum of its proper divisors (567033631743).

1213120133313 is a wasteful number, since it uses less digits than its factorization.

1213120133313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325320624.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1213120133313 its reverse (3133310213121), we get a palindrome (4346430346434).

The spelling of 1213120133313 in words is "one trillion, two hundred thirteen billion, one hundred twenty million, one hundred thirty-three thousand, three hundred thirteen".