210211221331 has 2 divisors, whose sum is σ = 210211221332. Its totient is φ = 210211221330.

The previous prime is 210211221307. The next prime is 210211221347. The reversal of 210211221331 is 133122112012.

210211221331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210211221331 - 2⁵ = 210211221299 is a prime.

It is a super-2 number, since 2×210211221331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210211221299 and 210211221308.

It is not a weakly prime, because it can be changed into another prime (210211201331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105105610665 + 105105610666.

It is an arithmetic number, because the mean of its divisors is an integer number (105105610666).

Almost surely, 2^210211221331 is an apocalyptic number.

210211221331 is a deficient number, since it is larger than the sum of its proper divisors (1).

210211221331 is an equidigital number, since it uses as much as digits as its factorization.

210211221331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 210211221331 its reverse (133122112012), we get a palindrome (343333333343).

The spelling of 210211221331 in words is "two hundred ten billion, two hundred eleven million, two hundred twenty-one thousand, three hundred thirty-one".