21412043311 has 4 divisors (see below), whose sum is σ = 21412861624. Its totient is φ = 21411225000.

The previous prime is 21412043291. The next prime is 21412043333. The reversal of 21412043311 is 11334021412.

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 21412043311 - 2¹⁷ = 21411912239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412043011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368565 + ... + 422686.

It is an arithmetic number, because the mean of its divisors is an integer number (5353215406).

Almost surely, 2^21412043311 is an apocalyptic number.

21412043311 is a deficient number, since it is larger than the sum of its proper divisors (818313).

21412043311 is an equidigital number, since it uses as much as digits as its factorization.

21412043311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818312.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21412043311 its reverse (11334021412), we get a palindrome (32746064723).

The spelling of 21412043311 in words is "twenty-one billion, four hundred twelve million, forty-three thousand, three hundred eleven".