21014451214 has 8 divisors (see below), whose sum is σ = 31615213968. Its totient is φ = 10476046560.

The previous prime is 21014451203. The next prime is 21014451223. The reversal of 21014451214 is 41215441012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15588682 + ... + 15590029.

It is an arithmetic number, because the mean of its divisors is an integer number (3951901746).

Almost surely, 2^21014451214 is an apocalyptic number.

21014451214 is a deficient number, since it is larger than the sum of its proper divisors (10600762754).

21014451214 is a wasteful number, since it uses less digits than its factorization.

21014451214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31179050.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 21014451214 its reverse (41215441012), we get a palindrome (62229892226).

The spelling of 21014451214 in words is "twenty-one billion, fourteen million, four hundred fifty-one thousand, two hundred fourteen".