221341019 has 2 divisors, whose sum is σ = 221341020. Its totient is φ = 221341018.

The previous prime is 221340991. The next prime is 221341027. The reversal of 221341019 is 910143122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221341019 is a prime.

It is a super-2 number, since 2×221341019² = 97983693383916722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 221340985 and 221341003.

It is not a weakly prime, because it can be changed into another prime (221341039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110670509 + 110670510.

It is an arithmetic number, because the mean of its divisors is an integer number (110670510).

Almost surely, 2^221341019 is an apocalyptic number.

221341019 is a deficient number, since it is larger than the sum of its proper divisors (1).

221341019 is an equidigital number, since it uses as much as digits as its factorization.

221341019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 221341019 is about 14877.5340362575. The cubic root of 221341019 is about 604.9051774074.

The spelling of 221341019 in words is "two hundred twenty-one million, three hundred forty-one thousand, nineteen".