221440443041 has 4 divisors (see below), whose sum is σ = 221461174272. Its totient is φ = 221419711812.

The previous prime is 221440443031. The next prime is 221440443067. The reversal of 221440443041 is 140344044122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221440443041 - 2¹⁴ = 221440426657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221440442995 and 221440443013.

It is not an unprimeable number, because it can be changed into a prime (221440443031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10349585 + ... + 10370958.

It is an arithmetic number, because the mean of its divisors is an integer number (55365293568).

Almost surely, 2^221440443041 is an apocalyptic number.

It is an amenable number.

221440443041 is a deficient number, since it is larger than the sum of its proper divisors (20731231).

221440443041 is a wasteful number, since it uses less digits than its factorization.

221440443041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20731230.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 221440443041 its reverse (140344044122), we get a palindrome (361784487163).

The spelling of 221440443041 in words is "two hundred twenty-one billion, four hundred forty million, four hundred forty-three thousand, forty-one".