21401114 has 16 divisors (see below), whose sum is σ = 36784896. Its totient is φ = 9147600.

The previous prime is 21401111. The next prime is 21401119. The reversal of 21401114 is 41110412.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (21401111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4079 + ... + 7709.

It is an arithmetic number, because the mean of its divisors is an integer number (2299056).

Almost surely, 2^21401114 is an apocalyptic number.

21401114 is a deficient number, since it is larger than the sum of its proper divisors (15383782).

21401114 is a wasteful number, since it uses less digits than its factorization.

21401114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 21401114 is about 4626.1338069710. The cubic root of 21401114 is about 277.6379272676.

Adding to 21401114 its reverse (41110412), we get a palindrome (62511526).

The spelling of 21401114 in words is "twenty-one million, four hundred one thousand, one hundred fourteen".