1300220321221 has 8 divisors (see below), whose sum is σ = 1320915687704. Its totient is φ = 1279602904320.

The previous prime is 1300220321189. The next prime is 1300220321263. The reversal of 1300220321221 is 1221230220031.

It can be written as a sum of positive squares in 4 ways, for example, as 155350281025 + 1144870040196 = 394145^2 + 1069986^2 .

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 1300220321221 - 2⁵ = 1300220321189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300220321021) 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, 19453770 + ... + 19520491.

It is an arithmetic number, because the mean of its divisors is an integer number (165114460963).

Almost surely, 2^{1300220321221} is an apocalyptic number.

It is an amenable number.

1300220321221 is a deficient number, since it is larger than the sum of its proper divisors (20695366483).

1300220321221 is an equidigital number, since it uses as much as digits as its factorization.

1300220321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38974791.

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

Adding to 1300220321221 its reverse (1221230220031), we get a palindrome (2521450541252).

The spelling of 1300220321221 in words is "one trillion, three hundred billion, two hundred twenty million, three hundred twenty-one thousand, two hundred twenty-one".