21341254199 has 2 divisors, whose sum is σ = 21341254200. Its totient is φ = 21341254198.

The previous prime is 21341254189. The next prime is 21341254211. The reversal of 21341254199 is 99145214312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21341254199 - 2²⁸ = 21072818743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21341254189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10670627099 + 10670627100.

It is an arithmetic number, because the mean of its divisors is an integer number (10670627100).

Almost surely, 2^21341254199 is an apocalyptic number.

21341254199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21341254199 is an equidigital number, since it uses as much as digits as its factorization.

21341254199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The spelling of 21341254199 in words is "twenty-one billion, three hundred forty-one million, two hundred fifty-four thousand, one hundred ninety-nine".