21412113999 has 4 divisors (see below), whose sum is σ = 28549485336. Its totient is φ = 14274742664.

The previous prime is 21412113941. The next prime is 21412114001. The reversal of 21412113999 is 99931121412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21412113999 - 2¹⁷ = 21411982927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21412113999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412113599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3568685664 + ... + 3568685669.

It is an arithmetic number, because the mean of its divisors is an integer number (7137371334).

Almost surely, 2^21412113999 is an apocalyptic number.

21412113999 is a deficient number, since it is larger than the sum of its proper divisors (7137371337).

21412113999 is an equidigital number, since it uses as much as digits as its factorization.

21412113999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7137371336.

The product of its digits is 34992, while the sum is 42.

The spelling of 21412113999 in words is "twenty-one billion, four hundred twelve million, one hundred thirteen thousand, nine hundred ninety-nine".