221330001313 has 2 divisors, whose sum is σ = 221330001314. Its totient is φ = 221330001312.

The previous prime is 221330001287. The next prime is 221330001329. The reversal of 221330001313 is 313100033122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154234496529 + 67095504784 = 392727^2 + 259028^2 .

It is a cyclic number.

It is not a de Polignac number, because 221330001313 - 2⁵ = 221330001281 is a prime.

It is not a weakly prime, because it can be changed into another prime (221330001383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110665000656 + 110665000657.

It is an arithmetic number, because the mean of its divisors is an integer number (110665000657).

Almost surely, 2^221330001313 is an apocalyptic number.

It is an amenable number.

221330001313 is a deficient number, since it is larger than the sum of its proper divisors (1).

221330001313 is an equidigital number, since it uses as much as digits as its factorization.

221330001313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 221330001313 its reverse (313100033122), we get a palindrome (534430034435).

The spelling of 221330001313 in words is "two hundred twenty-one billion, three hundred thirty million, one thousand, three hundred thirteen".