221500041 has 12 divisors (see below), whose sum is σ = 343551312. Its totient is φ = 126571368.

The previous prime is 221500039. The next prime is 221500063. The reversal of 221500041 is 140005122.

221500041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221500041 - 2¹ = 221500039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221500141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 753255 + ... + 753548.

It is an arithmetic number, because the mean of its divisors is an integer number (28629276).

Almost surely, 2^221500041 is an apocalyptic number.

221500041 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221500041 is a deficient number, since it is larger than the sum of its proper divisors (122051271).

221500041 is a wasteful number, since it uses less digits than its factorization.

221500041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506820 (or 1506813 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 221500041 is about 14882.8774435591. The cubic root of 221500041 is about 605.0500070224.

Adding to 221500041 its reverse (140005122), we get a palindrome (361505163).

The spelling of 221500041 in words is "two hundred twenty-one million, five hundred thousand, forty-one".