21421203301 has 8 divisors (see below), whose sum is σ = 21967761024. Its totient is φ = 20878428480.

The previous prime is 21421203299. The next prime is 21421203359. The reversal of 21421203301 is 10330212412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21421203301 - 2¹ = 21421203299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21421203361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934255 + ... + 956908.

It is an arithmetic number, because the mean of its divisors is an integer number (2745970128).

Almost surely, 2^21421203301 is an apocalyptic number.

It is an amenable number.

21421203301 is a deficient number, since it is larger than the sum of its proper divisors (546557723).

21421203301 is a wasteful number, since it uses less digits than its factorization.

21421203301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891451.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21421203301 its reverse (10330212412), we get a palindrome (31751415713).

The spelling of 21421203301 in words is "twenty-one billion, four hundred twenty-one million, two hundred three thousand, three hundred one".