21421254314 has 8 divisors (see below), whose sum is σ = 32134390848. Its totient is φ = 10709790700.

The previous prime is 21421254307. The next prime is 21421254353. The reversal of 21421254314 is 41345212412.

It is a happy number.

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

It is a super-3 number, since 3×21421254314³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon 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, 385712 + ... + 437739.

It is an arithmetic number, because the mean of its divisors is an integer number (4016798856).

Almost surely, 2^21421254314 is an apocalyptic number.

21421254314 is a deficient number, since it is larger than the sum of its proper divisors (10713136534).

21421254314 is a wasteful number, since it uses less digits than its factorization.

21421254314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836460.

The product of its digits is 7680, while the sum is 29.

Adding to 21421254314 its reverse (41345212412), we get a palindrome (62766466726).

The spelling of 21421254314 in words is "twenty-one billion, four hundred twenty-one million, two hundred fifty-four thousand, three hundred fourteen".