11141974421 has 2 divisors, whose sum is σ = 11141974422. Its totient is φ = 11141974420.

The previous prime is 11141974331. The next prime is 11141974423. The reversal of 11141974421 is 12447914111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10317480625 + 824493796 = 101575^2 + 28714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11141974421 is a prime.

Together with 11141974423, 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 (11141974423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5570987210 + 5570987211.

It is an arithmetic number, because the mean of its divisors is an integer number (5570987211).

Almost surely, 2^11141974421 is an apocalyptic number.

It is an amenable number.

11141974421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11141974421 is an equidigital number, since it uses as much as digits as its factorization.

11141974421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The spelling of 11141974421 in words is "eleven billion, one hundred forty-one million, nine hundred seventy-four thousand, four hundred twenty-one".