2113124244421 has 2 divisors, whose sum is σ = 2113124244422. Its totient is φ = 2113124244420.

The previous prime is 2113124244373. The next prime is 2113124244433. The reversal of 2113124244421 is 1244424213112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1600161750625 + 512962493796 = 1264975^2 + 716214^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113124244421 - 2¹¹ = 2113124242373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113124274421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056562122210 + 1056562122211.

It is an arithmetic number, because the mean of its divisors is an integer number (1056562122211).

Almost surely, 2^{2113124244421} is an apocalyptic number.

It is an amenable number.

2113124244421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113124244421 is an equidigital number, since it uses as much as digits as its factorization.

2113124244421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 31.

Adding to 2113124244421 its reverse (1244424213112), we get a palindrome (3357548457533).

The spelling of 2113124244421 in words is "two trillion, one hundred thirteen billion, one hundred twenty-four million, two hundred forty-four thousand, four hundred twenty-one".