222165636541 has 16 divisors (see below), whose sum is σ = 239526654400. Its totient is φ = 205429074048.

The previous prime is 222165636529. The next prime is 222165636607. The reversal of 222165636541 is 145636561222.

It is a cyclic number.

It is not a de Polignac number, because 222165636541 - 2¹⁵ = 222165603773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222165636041) 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, 661800 + ... + 939313.

It is an arithmetic number, because the mean of its divisors is an integer number (14970415900).

Almost surely, 2^222165636541 is an apocalyptic number.

It is an amenable number.

222165636541 is a deficient number, since it is larger than the sum of its proper divisors (17361017859).

222165636541 is a wasteful number, since it uses less digits than its factorization.

222165636541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601308.

The product of its digits is 518400, while the sum is 43.

The spelling of 222165636541 in words is "two hundred twenty-two billion, one hundred sixty-five million, six hundred thirty-six thousand, five hundred forty-one".