13154104421 has 2 divisors, whose sum is σ = 13154104422. Its totient is φ = 13154104420.

The previous prime is 13154104417. The next prime is 13154104423. The reversal of 13154104421 is 12440145131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10117543396 + 3036561025 = 100586^2 + 55105^2 .

It is a cyclic number.

It is not a de Polignac number, because 13154104421 - 2² = 13154104417 is a prime.

Together with 13154104423, 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 (13154104423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6577052210 + 6577052211.

It is an arithmetic number, because the mean of its divisors is an integer number (6577052211).

Almost surely, 2^13154104421 is an apocalyptic number.

It is an amenable number.

13154104421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13154104421 is an equidigital number, since it uses as much as digits as its factorization.

13154104421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 13154104421 its reverse (12440145131), we get a palindrome (25594249552).

The spelling of 13154104421 in words is "thirteen billion, one hundred fifty-four million, one hundred four thousand, four hundred twenty-one".