11204103211421 has 2 divisors, whose sum is σ = 11204103211422. Its totient is φ = 11204103211420.

The previous prime is 11204103211403. The next prime is 11204103211423. The reversal of 11204103211421 is 12411230140211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8218599576100 + 2985503635321 = 2866810^2 + 1727861^2 .

It is a cyclic number.

It is not a de Polignac number, because 11204103211421 - 2²² = 11204099017117 is a prime.

Together with 11204103211423, 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 (11204103211423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5602051605710 + 5602051605711.

It is an arithmetic number, because the mean of its divisors is an integer number (5602051605711).

Almost surely, 2^{11204103211421} is an apocalyptic number.

It is an amenable number.

11204103211421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11204103211421 is an equidigital number, since it uses as much as digits as its factorization.

11204103211421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 11204103211421 its reverse (12411230140211), we get a palindrome (23615333351632).

The spelling of 11204103211421 in words is "eleven trillion, two hundred four billion, one hundred three million, two hundred eleven thousand, four hundred twenty-one".