1221201320299 has 2 divisors, whose sum is σ = 1221201320300. Its totient is φ = 1221201320298.

The previous prime is 1221201320249. The next prime is 1221201320303. The reversal of 1221201320299 is 9920231021221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221201320299 - 2¹⁷ = 1221201189227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221201320249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610600660149 + 610600660150.

It is an arithmetic number, because the mean of its divisors is an integer number (610600660150).

Almost surely, 2^{1221201320299} is an apocalyptic number.

1221201320299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221201320299 is an equidigital number, since it uses as much as digits as its factorization.

1221201320299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 1221201320299 in words is "one trillion, two hundred twenty-one billion, two hundred one million, three hundred twenty thousand, two hundred ninety-nine".