21123014 has 8 divisors (see below), whose sum is σ = 34564968. Its totient is φ = 9601360.

The previous prime is 21123013. The next prime is 21123017. The reversal of 21123014 is 41032112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21123014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21123013) 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, 480047 + ... + 480090.

It is an arithmetic number, because the mean of its divisors is an integer number (4320621).

Almost surely, 2^21123014 is an apocalyptic number.

21123014 is a deficient number, since it is larger than the sum of its proper divisors (13441954).

21123014 is a wasteful number, since it uses less digits than its factorization.

21123014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960150.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21123014 is about 4595.9780243165. The cubic root of 21123014 is about 276.4300775748.

Adding to 21123014 its reverse (41032112), we get a palindrome (62155126).

The spelling of 21123014 in words is "twenty-one million, one hundred twenty-three thousand, fourteen".