221312040211 has 8 divisors (see below), whose sum is σ = 229851671040. Its totient is φ = 212932028808.

The previous prime is 221312040181. The next prime is 221312040233. The reversal of 221312040211 is 112040213122.

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 221312040211 - 2⁹ = 221312039699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221312040251) 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, 39902031 + ... + 39907576.

It is an arithmetic number, because the mean of its divisors is an integer number (28731458880).

Almost surely, 2^221312040211 is an apocalyptic number.

221312040211 is a deficient number, since it is larger than the sum of its proper divisors (8539630829).

221312040211 is an equidigital number, since it uses as much as digits as its factorization.

221312040211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79809713.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221312040211 its reverse (112040213122), we get a palindrome (333352253333).

The spelling of 221312040211 in words is "two hundred twenty-one billion, three hundred twelve million, forty thousand, two hundred eleven".