221010011311 has 2 divisors, whose sum is σ = 221010011312. Its totient is φ = 221010011310.

The previous prime is 221010011251. The next prime is 221010011353. The reversal of 221010011311 is 113110010122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221010011311 - 2¹¹ = 221010009263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221010011291 and 221010011300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221010017311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505005655 + 110505005656.

It is an arithmetic number, because the mean of its divisors is an integer number (110505005656).

Almost surely, 2^221010011311 is an apocalyptic number.

221010011311 is a deficient number, since it is larger than the sum of its proper divisors (1).

221010011311 is an equidigital number, since it uses as much as digits as its factorization.

221010011311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 221010011311 its reverse (113110010122), we get a palindrome (334120021433).

The spelling of 221010011311 in words is "two hundred twenty-one billion, ten million, eleven thousand, three hundred eleven".