21214521302 has 8 divisors (see below), whose sum is σ = 34269611376. Its totient is φ = 9791317512.

The previous prime is 21214521287. The next prime is 21214521319. The reversal of 21214521302 is 20312541212.

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, 407971538 + ... + 407971589.

It is an arithmetic number, because the mean of its divisors is an integer number (4283701422).

Almost surely, 2^21214521302 is an apocalyptic number.

21214521302 is a deficient number, since it is larger than the sum of its proper divisors (13055090074).

21214521302 is a wasteful number, since it uses less digits than its factorization.

21214521302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815943142.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 21214521302 in words is "twenty-one billion, two hundred fourteen million, five hundred twenty-one thousand, three hundred two".