210001211311 has 2 divisors, whose sum is σ = 210001211312. Its totient is φ = 210001211310.

The previous prime is 210001211267. The next prime is 210001211317. The reversal of 210001211311 is 113112100012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210001211311 - 2⁷ = 210001211183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210001211291 and 210001211300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210001211317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000605655 + 105000605656.

It is an arithmetic number, because the mean of its divisors is an integer number (105000605656).

Almost surely, 2^210001211311 is an apocalyptic number.

210001211311 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001211311 is an equidigital number, since it uses as much as digits as its factorization.

210001211311 is an evil number, because the sum of its binary digits is even.

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

Adding to 210001211311 its reverse (113112100012), we get a palindrome (323113311323).

It can be divided in two parts, 2100012 and 11311, that multiplied together give a palindrome (23753235732).

The spelling of 210001211311 in words is "two hundred ten billion, one million, two hundred eleven thousand, three hundred eleven".