2221120030321 has 4 divisors (see below), whose sum is σ = 2226421033200. Its totient is φ = 2215819027444.

The previous prime is 2221120030301. The next prime is 2221120030387. The reversal of 2221120030321 is 1230300211222.

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 2221120030321 - 2³³ = 2212530095729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221120030301) 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, 2650500811 + ... + 2650501648.

It is an arithmetic number, because the mean of its divisors is an integer number (556605258300).

Almost surely, 2^{2221120030321} is an apocalyptic number.

It is an amenable number.

2221120030321 is a deficient number, since it is larger than the sum of its proper divisors (5301002879).

2221120030321 is an equidigital number, since it uses as much as digits as its factorization.

2221120030321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301002878.

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

Adding to 2221120030321 its reverse (1230300211222), we get a palindrome (3451420241543).

The spelling of 2221120030321 in words is "two trillion, two hundred twenty-one billion, one hundred twenty million, thirty thousand, three hundred twenty-one".