1211312303113 has 16 divisors (see below), whose sum is σ = 1444297167360. Its totient is φ = 1002984134400.

The previous prime is 1211312303111. The next prime is 1211312303141. The reversal of 1211312303113 is 3113032131121.

It is a cyclic number.

It is not a de Polignac number, because 1211312303113 - 2¹ = 1211312303111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211312303111) 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 15 ways as a sum of consecutive naturals, for example, 104471718 + ... + 104483311.

It is an arithmetic number, because the mean of its divisors is an integer number (90268572960).

Almost surely, 2^{1211312303113} is an apocalyptic number.

It is an amenable number.

1211312303113 is a deficient number, since it is larger than the sum of its proper divisors (232984864247).

1211312303113 is a wasteful number, since it uses less digits than its factorization.

1211312303113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208955088.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1211312303113 its reverse (3113032131121), we get a palindrome (4324344434234).

The spelling of 1211312303113 in words is "one trillion, two hundred eleven billion, three hundred twelve million, three hundred three thousand, one hundred thirteen".