11242101421 has 2 divisors, whose sum is σ = 11242101422. Its totient is φ = 11242101420.

The previous prime is 11242101379. The next prime is 11242101427. The reversal of 11242101421 is 12410124211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6136998921 + 5105102500 = 78339^2 + 71450^2 .

It is a cyclic number.

It is not a de Polignac number, because 11242101421 - 2²⁹ = 10705230509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11242101427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5621050710 + 5621050711.

It is an arithmetic number, because the mean of its divisors is an integer number (5621050711).

Almost surely, 2^11242101421 is an apocalyptic number.

It is an amenable number.

11242101421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11242101421 is an equidigital number, since it uses as much as digits as its factorization.

11242101421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11242101421 its reverse (12410124211), we get a palindrome (23652225632).

The spelling of 11242101421 in words is "eleven billion, two hundred forty-two million, one hundred one thousand, four hundred twenty-one".