221411299 has 4 divisors (see below), whose sum is σ = 224529840. Its totient is φ = 218292760.

The previous prime is 221411287. The next prime is 221411303. The reversal of 221411299 is 992114122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221411299 - 2¹⁹ = 220887011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221411299.

It is not an unprimeable number, because it can be changed into a prime (221412299) 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 in 3 ways as a sum of consecutive naturals, for example, 1559164 + ... + 1559305.

It is an arithmetic number, because the mean of its divisors is an integer number (56132460).

Almost surely, 2^221411299 is an apocalyptic number.

221411299 is a deficient number, since it is larger than the sum of its proper divisors (3118541).

221411299 is an equidigital number, since it uses as much as digits as its factorization.

221411299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118540.

The product of its digits is 2592, while the sum is 31.

The square root of 221411299 is about 14879.8957993663. The cubic root of 221411299 is about 604.9691936139.

The spelling of 221411299 in words is "two hundred twenty-one million, four hundred eleven thousand, two hundred ninety-nine".