221342441 has 8 divisors (see below), whose sum is σ = 223319040. Its totient is φ = 219375072.

The previous prime is 221342389. The next prime is 221342489. The reversal of 221342441 is 144243122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221342441 - 2²² = 217148137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221342141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51221 + ... + 55373.

It is an arithmetic number, because the mean of its divisors is an integer number (27914880).

Almost surely, 2^221342441 is an apocalyptic number.

It is an amenable number.

221342441 is a deficient number, since it is larger than the sum of its proper divisors (1976599).

221342441 is a wasteful number, since it uses less digits than its factorization.

221342441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615.

The product of its digits is 1536, while the sum is 23.

The square root of 221342441 is about 14877.5818263587. The cubic root of 221342441 is about 604.9064728041.

Adding to 221342441 its reverse (144243122), we get a palindrome (365585563).

The spelling of 221342441 in words is "two hundred twenty-one million, three hundred forty-two thousand, four hundred forty-one".