1113403241021 has 2 divisors, whose sum is σ = 1113403241022. Its totient is φ = 1113403241020.

The previous prime is 1113403241009. The next prime is 1113403241023. The reversal of 1113403241021 is 1201423043111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 942928392025 + 170474848996 = 971045^2 + 412886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113403241021 is a prime.

Together with 1113403241023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113403241023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556701620510 + 556701620511.

It is an arithmetic number, because the mean of its divisors is an integer number (556701620511).

Almost surely, 2^{1113403241021} is an apocalyptic number.

It is an amenable number.

1113403241021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113403241021 is an equidigital number, since it uses as much as digits as its factorization.

1113403241021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1113403241021 its reverse (1201423043111), we get a palindrome (2314826284132).

The spelling of 1113403241021 in words is "one trillion, one hundred thirteen billion, four hundred three million, two hundred forty-one thousand, twenty-one".