30221001021 has 8 divisors (see below), whose sum is σ = 40297668480. Its totient is φ = 20145833792.

The previous prime is 30221000983. The next prime is 30221001089. The reversal of 30221001021 is 12010012203.

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 30221001021 - 2²⁵ = 30187446589 is a prime.

It is a super-2 number, since 2×30221001021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30221000988 and 30221001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327180 + ... + 409253.

It is an arithmetic number, because the mean of its divisors is an integer number (5037208560).

Almost surely, 2^30221001021 is an apocalyptic number.

It is an amenable number.

30221001021 is a deficient number, since it is larger than the sum of its proper divisors (10076667459).

30221001021 is a wasteful number, since it uses less digits than its factorization.

30221001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750115.

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

Adding to 30221001021 its reverse (12010012203), we get a palindrome (42231013224).

The spelling of 30221001021 in words is "thirty billion, two hundred twenty-one million, one thousand, twenty-one".