1220221322213 has 8 divisors (see below), whose sum is σ = 1243604332800. Its totient is φ = 1196947324080.

The previous prime is 1220221322197. The next prime is 1220221322227. The reversal of 1220221322213 is 3122231220221.

It is a happy number.

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

It is not a de Polignac number, because 1220221322213 - 2⁴ = 1220221322197 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 (1220221322273) 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, 27230513 + ... + 27275286.

It is an arithmetic number, because the mean of its divisors is an integer number (155450541600).

Almost surely, 2^{1220221322213} is an apocalyptic number.

It is an amenable number.

1220221322213 is a deficient number, since it is larger than the sum of its proper divisors (23383010587).

1220221322213 is an equidigital number, since it uses as much as digits as its factorization.

1220221322213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54506227.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1220221322213 its reverse (3122231220221), we get a palindrome (4342452542434).

The spelling of 1220221322213 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, three hundred twenty-two thousand, two hundred thirteen".