301221000021 has 8 divisors (see below), whose sum is σ = 404032958784. Its totient is φ = 199611520640.

The previous prime is 301220999999. The next prime is 301221000049. The reversal of 301221000021 is 120000122103.

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 301221000021 - 2⁹ = 301220999509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 301220999970 and 301221000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (301221000121) 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, 300619260 + ... + 300620261.

It is an arithmetic number, because the mean of its divisors is an integer number (50504119848).

Almost surely, 2^301221000021 is an apocalyptic number.

It is an amenable number.

301221000021 is a deficient number, since it is larger than the sum of its proper divisors (102811958763).

301221000021 is a wasteful number, since it uses less digits than its factorization.

301221000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601239691.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 301221000021 its reverse (120000122103), we get a palindrome (421221122124).

The spelling of 301221000021 in words is "three hundred one billion, two hundred twenty-one million, twenty-one", and thus it is an aban number.