21415041199 has 2 divisors, whose sum is σ = 21415041200. Its totient is φ = 21415041198.

The previous prime is 21415041187. The next prime is 21415041247. The reversal of 21415041199 is 99114051412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21415041199 - 2¹⁵ = 21415008431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21415041119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707520599 + 10707520600.

It is an arithmetic number, because the mean of its divisors is an integer number (10707520600).

Almost surely, 2^21415041199 is an apocalyptic number.

21415041199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21415041199 is an equidigital number, since it uses as much as digits as its factorization.

21415041199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 37.

It can be divided in two parts, 21415041 and 199, that added together give a triangular number (21415240 = T₆₅₄₄).

The spelling of 21415041199 in words is "twenty-one billion, four hundred fifteen million, forty-one thousand, one hundred ninety-nine".