221882541 has 16 divisors (see below), whose sum is σ = 309104640. Its totient is φ = 141307760.

The previous prime is 221882519. The next prime is 221882561. The reversal of 221882541 is 145288122.

It is a cyclic number.

It is not a de Polignac number, because 221882541 - 2⁶ = 221882477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221882561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69580 + ... + 72698.

It is an arithmetic number, because the mean of its divisors is an integer number (19319040).

Almost surely, 2^221882541 is an apocalyptic number.

It is an amenable number.

221882541 is a deficient number, since it is larger than the sum of its proper divisors (87222099).

221882541 is a wasteful number, since it uses less digits than its factorization.

221882541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176.

The product of its digits is 10240, while the sum is 33.

The square root of 221882541 is about 14895.7222382804. The cubic root of 221882541 is about 605.3980860227.

The spelling of 221882541 in words is "two hundred twenty-one million, eight hundred eighty-two thousand, five hundred forty-one".