30220501215221 has 4 divisors (see below), whose sum is σ = 30222538887744. Its totient is φ = 30218463542700.

The previous prime is 30220501215209. The next prime is 30220501215227. The reversal of 30220501215221 is 12251210502203.

It is a happy number.

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 30220501215221 - 2¹⁴ = 30220501198837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220501215227) 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, 1018814015 + ... + 1018843676.

It is an arithmetic number, because the mean of its divisors is an integer number (7555634721936).

Almost surely, 2^{30220501215221} is an apocalyptic number.

It is an amenable number.

30220501215221 is a deficient number, since it is larger than the sum of its proper divisors (2037672523).

30220501215221 is a wasteful number, since it uses less digits than its factorization.

30220501215221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037672522.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 30220501215221 its reverse (12251210502203), we get a palindrome (42471711717424).

The spelling of 30220501215221 in words is "thirty trillion, two hundred twenty billion, five hundred one million, two hundred fifteen thousand, two hundred twenty-one".