30213212221 has 8 divisors (see below), whose sum is σ = 30929444000. Its totient is φ = 29504107440.

The previous prime is 30213212203. The next prime is 30213212233. The reversal of 30213212221 is 12221231203.

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 30213212221 - 2⁵ = 30213212189 is a prime.

It is a super-2 number, since 2×30213212221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213212261) 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, 1773171 + ... + 1790128.

It is an arithmetic number, because the mean of its divisors is an integer number (3866180500).

Almost surely, 2^30213212221 is an apocalyptic number.

It is an amenable number.

30213212221 is a deficient number, since it is larger than the sum of its proper divisors (716231779).

30213212221 is a wasteful number, since it uses less digits than its factorization.

30213212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563499.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30213212221 its reverse (12221231203), we get a palindrome (42434443424).

The spelling of 30213212221 in words is "thirty billion, two hundred thirteen million, two hundred twelve thousand, two hundred twenty-one".