221032113311 has 2 divisors, whose sum is σ = 221032113312. Its totient is φ = 221032113310.

The previous prime is 221032113293. The next prime is 221032113359. The reversal of 221032113311 is 113311230122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221032113311 is a prime.

It is a super-2 number, since 2×221032113311² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221032113011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110516056655 + 110516056656.

It is an arithmetic number, because the mean of its divisors is an integer number (110516056656).

Almost surely, 2^221032113311 is an apocalyptic number.

221032113311 is a deficient number, since it is larger than the sum of its proper divisors (1).

221032113311 is an equidigital number, since it uses as much as digits as its factorization.

221032113311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 221032113311 its reverse (113311230122), we get a palindrome (334343343433).

The spelling of 221032113311 in words is "two hundred twenty-one billion, thirty-two million, one hundred thirteen thousand, three hundred eleven".