1220332330221 has 4 divisors (see below), whose sum is σ = 1627109773632. Its totient is φ = 813554886812.

The previous prime is 1220332330199. The next prime is 1220332330253.

1220332330221 is nontrivially palindromic in base 10.

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 1220332330221 - 2⁶ = 1220332330157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1220332330191 and 1220332330200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220332330621) 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, 203388721701 + ... + 203388721706.

It is an arithmetic number, because the mean of its divisors is an integer number (406777443408).

Almost surely, 2^{1220332330221} is an apocalyptic number.

It is an amenable number.

1220332330221 is a deficient number, since it is larger than the sum of its proper divisors (406777443411).

1220332330221 is an equidigital number, since it uses as much as digits as its factorization.

1220332330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406777443410.

The product of its (nonzero) digits is 2592, while the sum is 24.

The spelling of 1220332330221 in words is "one trillion, two hundred twenty billion, three hundred thirty-two million, three hundred thirty thousand, two hundred twenty-one".