30021202101221 has 4 divisors (see below), whose sum is σ = 30530036035200. Its totient is φ = 29512368167244.

The previous prime is 30021202101173. The next prime is 30021202101227. The reversal of 30021202101221 is 12210120212003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30021202101221 - 2¹⁸ = 30021201839077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30021202101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021202101227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254416966901 + ... + 254416967018.

It is an arithmetic number, because the mean of its divisors is an integer number (7632509008800).

Almost surely, 2^{30021202101221} is an apocalyptic number.

It is an amenable number.

30021202101221 is a deficient number, since it is larger than the sum of its proper divisors (508833933979).

30021202101221 is an equidigital number, since it uses as much as digits as its factorization.

30021202101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508833933978.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 30021202101221 its reverse (12210120212003), we get a palindrome (42231322313224).

The spelling of 30021202101221 in words is "thirty trillion, twenty-one billion, two hundred two million, one hundred one thousand, two hundred twenty-one".