1220221330021 has 8 divisors (see below), whose sum is σ = 1242295488000. Its totient is φ = 1198213963440.

The previous prime is 1220221329991. The next prime is 1220221330043. The reversal of 1220221330021 is 1200331220221.

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 1220221330021 - 2⁵ = 1220221329989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220221330721) 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, 16660981 + ... + 16734058.

It is an arithmetic number, because the mean of its divisors is an integer number (155286936000).

Almost surely, 2^{1220221330021} is an apocalyptic number.

It is an amenable number.

1220221330021 is a deficient number, since it is larger than the sum of its proper divisors (22074157979).

1220221330021 is an equidigital number, since it uses as much as digits as its factorization.

1220221330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33395699.

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

Adding to 1220221330021 its reverse (1200331220221), we get a palindrome (2420552550242).

The spelling of 1220221330021 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, three hundred thirty thousand, twenty-one".