211330121311 has 16 divisors (see below), whose sum is σ = 214045977600. Its totient is φ = 208636797600.

The previous prime is 211330121309. The next prime is 211330121369. The reversal of 211330121311 is 113121033112.

It is a cyclic number.

It is not a de Polignac number, because 211330121311 - 2¹ = 211330121309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211330121371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14311350 + ... + 14326108.

It is an arithmetic number, because the mean of its divisors is an integer number (13377873600).

Almost surely, 2^211330121311 is an apocalyptic number.

211330121311 is a deficient number, since it is larger than the sum of its proper divisors (2715856289).

211330121311 is a wasteful number, since it uses less digits than its factorization.

211330121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15510.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 211330121311 its reverse (113121033112), we get a palindrome (324451154423).

The spelling of 211330121311 in words is "two hundred eleven billion, three hundred thirty million, one hundred twenty-one thousand, three hundred eleven".