21414422011 has 4 divisors (see below), whose sum is σ = 22674093912. Its totient is φ = 20154750112.

The previous prime is 21414421981. The next prime is 21414422027. The reversal of 21414422011 is 11022441412.

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

It is a de Polignac number, because none of the positive numbers 2^k-21414422011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21414422111) 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, 629835925 + ... + 629835958.

It is an arithmetic number, because the mean of its divisors is an integer number (5668523478).

Almost surely, 2^21414422011 is an apocalyptic number.

21414422011 is a deficient number, since it is larger than the sum of its proper divisors (1259671901).

21414422011 is a wasteful number, since it uses less digits than its factorization.

21414422011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259671900.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21414422011 its reverse (11022441412), we get a palindrome (32436863423).

The spelling of 21414422011 in words is "twenty-one billion, four hundred fourteen million, four hundred twenty-two thousand, eleven".