211220221327 has 2 divisors, whose sum is σ = 211220221328. Its totient is φ = 211220221326.

The previous prime is 211220221301. The next prime is 211220221391. The reversal of 211220221327 is 723122022112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211220221327 - 2³⁵ = 176860482959 is a prime.

It is a super-2 number, since 2×211220221327² (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 (211220221727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105610110663 + 105610110664.

It is an arithmetic number, because the mean of its divisors is an integer number (105610110664).

Almost surely, 2^211220221327 is an apocalyptic number.

211220221327 is a deficient number, since it is larger than the sum of its proper divisors (1).

211220221327 is an equidigital number, since it uses as much as digits as its factorization.

211220221327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 211220221327 its reverse (723122022112), we get a palindrome (934342243439).

The spelling of 211220221327 in words is "two hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, three hundred twenty-seven".