221413097 has 2 divisors, whose sum is σ = 221413098. Its totient is φ = 221413096.

The previous prime is 221413081. The next prime is 221413123. The reversal of 221413097 is 790314122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158860816 + 62552281 = 12604^2 + 7909^2 .

It is a cyclic number.

It is not a de Polignac number, because 221413097 - 2⁴ = 221413081 is a prime.

It is not a weakly prime, because it can be changed into another prime (221413007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110706548 + 110706549.

It is an arithmetic number, because the mean of its divisors is an integer number (110706549).

Almost surely, 2^221413097 is an apocalyptic number.

It is an amenable number.

221413097 is a deficient number, since it is larger than the sum of its proper divisors (1).

221413097 is an equidigital number, since it uses as much as digits as its factorization.

221413097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 221413097 is about 14879.9562163334. The cubic root of 221413097 is about 604.9708311871.

The spelling of 221413097 in words is "two hundred twenty-one million, four hundred thirteen thousand, ninety-seven".