30000000101221 has 4 divisors (see below), whose sum is σ = 30000795916000. Its totient is φ = 29999204286444.

The previous prime is 30000000101191. The next prime is 30000000101257. The reversal of 30000000101221 is 12210100000003.

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 30000000101221 - 2¹⁵ = 30000000068453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30000000101198 and 30000000101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000000101921) 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, 397850841 + ... + 397926238.

It is an arithmetic number, because the mean of its divisors is an integer number (7500198979000).

Almost surely, 2^{30000000101221} is an apocalyptic number.

It is an amenable number.

30000000101221 is a deficient number, since it is larger than the sum of its proper divisors (795814779).

30000000101221 is an equidigital number, since it uses as much as digits as its factorization.

30000000101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795814778.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 30000000101221 its reverse (12210100000003), we get a palindrome (42210100101224).

The spelling of 30000000101221 in words is "thirty trillion, one hundred one thousand, two hundred twenty-one".