2121113103313 has 4 divisors (see below), whose sum is σ = 2150169447268. Its totient is φ = 2092056759360.

The previous prime is 2121113103301. The next prime is 2121113103359. The reversal of 2121113103313 is 3133013111212.

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 1365548833489 + 755564269824 = 1168567^2 + 869232^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121113103313 - 2⁵ = 2121113103281 is a prime.

It is a super-2 number, since 2×2121113103313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121113103413) 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, 14528171868 + ... + 14528172013.

It is an arithmetic number, because the mean of its divisors is an integer number (537542361817).

Almost surely, 2^{2121113103313} is an apocalyptic number.

It is an amenable number.

2121113103313 is a deficient number, since it is larger than the sum of its proper divisors (29056343955).

2121113103313 is an equidigital number, since it uses as much as digits as its factorization.

2121113103313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29056343954.

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

Adding to 2121113103313 its reverse (3133013111212), we get a palindrome (5254126214525).

The spelling of 2121113103313 in words is "two trillion, one hundred twenty-one billion, one hundred thirteen million, one hundred three thousand, three hundred thirteen".