30120202221 has 8 divisors (see below), whose sum is σ = 40251752640. Its totient is φ = 20034393312.

The previous prime is 30120202199. The next prime is 30120202223. The reversal of 30120202221 is 12220202103.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-30120202221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30120202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120202223) 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, 11433840 + ... + 11436473.

It is an arithmetic number, because the mean of its divisors is an integer number (5031469080).

Almost surely, 2^30120202221 is an apocalyptic number.

It is an amenable number.

30120202221 is a deficient number, since it is larger than the sum of its proper divisors (10131550419).

30120202221 is a wasteful number, since it uses less digits than its factorization.

30120202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22870755.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 30120202221 its reverse (12220202103), we get a palindrome (42340404324).

The spelling of 30120202221 in words is "thirty billion, one hundred twenty million, two hundred two thousand, two hundred twenty-one".