213121102311 has 24 divisors (see below), whose sum is σ = 331680039600. Its totient is φ = 131088813696.

The previous prime is 213121102301. The next prime is 213121102349. The reversal of 213121102311 is 113201121312.

It is not a de Polignac number, because 213121102311 - 2⁵ = 213121102279 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121102301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188326 + ... + 679491.

It is an arithmetic number, because the mean of its divisors is an integer number (13820001650).

Almost surely, 2^213121102311 is an apocalyptic number.

213121102311 is a deficient number, since it is larger than the sum of its proper divisors (118558937289).

213121102311 is a wasteful number, since it uses less digits than its factorization.

213121102311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869935 (or 869932 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 213121102311 its reverse (113201121312), we get a palindrome (326322223623).

The spelling of 213121102311 in words is "two hundred thirteen billion, one hundred twenty-one million, one hundred two thousand, three hundred eleven".