1111342101421 has 2 divisors, whose sum is σ = 1111342101422. Its totient is φ = 1111342101420.

The previous prime is 1111342101409. The next prime is 1111342101439. The reversal of 1111342101421 is 1241012431111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 615605006025 + 495737095396 = 784605^2 + 704086^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111342101421 - 2¹⁵ = 1111342068653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111342101392 and 1111342101401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111342101451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555671050710 + 555671050711.

It is an arithmetic number, because the mean of its divisors is an integer number (555671050711).

Almost surely, 2^{1111342101421} is an apocalyptic number.

It is an amenable number.

1111342101421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111342101421 is an equidigital number, since it uses as much as digits as its factorization.

1111342101421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 1111342101421 its reverse (1241012431111), we get a palindrome (2352354532532).

The spelling of 1111342101421 in words is "one trillion, one hundred eleven billion, three hundred forty-two million, one hundred one thousand, four hundred twenty-one".