221042310311 has 2 divisors, whose sum is σ = 221042310312. Its totient is φ = 221042310310.

The previous prime is 221042310289. The next prime is 221042310323. The reversal of 221042310311 is 113013240122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221042310311 - 2¹⁸ = 221042048167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221042310361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110521155155 + 110521155156.

It is an arithmetic number, because the mean of its divisors is an integer number (110521155156).

Almost surely, 2^221042310311 is an apocalyptic number.

221042310311 is a deficient number, since it is larger than the sum of its proper divisors (1).

221042310311 is an equidigital number, since it uses as much as digits as its factorization.

221042310311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221042310311 its reverse (113013240122), we get a palindrome (334055550433).

The spelling of 221042310311 in words is "two hundred twenty-one billion, forty-two million, three hundred ten thousand, three hundred eleven".