30221212211 has 4 divisors (see below), whose sum is σ = 30353182800. Its totient is φ = 30089241624.

The previous prime is 30221212201. The next prime is 30221212237. The reversal of 30221212211 is 11221212203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30221212211 - 2²² = 30217017907 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 30221212211.

It is not an unprimeable number, because it can be changed into a prime (30221212201) 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, 65984951 + ... + 65985408.

It is an arithmetic number, because the mean of its divisors is an integer number (7588295700).

Almost surely, 2^30221212211 is an apocalyptic number.

30221212211 is a deficient number, since it is larger than the sum of its proper divisors (131970589).

30221212211 is a wasteful number, since it uses less digits than its factorization.

30221212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131970588.

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

Adding to 30221212211 its reverse (11221212203), we get a palindrome (41442424414).

The spelling of 30221212211 in words is "thirty billion, two hundred twenty-one million, two hundred twelve thousand, two hundred eleven".