21414274199 has 2 divisors, whose sum is σ = 21414274200. Its totient is φ = 21414274198.

The previous prime is 21414274181. The next prime is 21414274249. The reversal of 21414274199 is 99147241412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21414274199 is a prime.

It is a super-2 number, since 2×21414274199² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21414274109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707137099 + 10707137100.

It is an arithmetic number, because the mean of its divisors is an integer number (10707137100).

Almost surely, 2^21414274199 is an apocalyptic number.

21414274199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21414274199 is an equidigital number, since it uses as much as digits as its factorization.

21414274199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The spelling of 21414274199 in words is "twenty-one billion, four hundred fourteen million, two hundred seventy-four thousand, one hundred ninety-nine".