211113120213 has 48 divisors (see below), whose sum is σ = 318269755440. Its totient is φ = 134744064000.

The previous prime is 211113120193. The next prime is 211113120217. The reversal of 211113120213 is 312021311112.

It can be written as a sum of positive squares in 8 ways, for example, as 29844369 + 211083275844 = 5463^2 + 459438^2 .

It is a de Polignac number, because none of the positive numbers 2^k-211113120213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211113120217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4186333 + ... + 4236461.

It is an arithmetic number, because the mean of its divisors is an integer number (6630619905).

Almost surely, 2^211113120213 is an apocalyptic number.

It is an amenable number.

211113120213 is a deficient number, since it is larger than the sum of its proper divisors (107156635227).

211113120213 is a wasteful number, since it uses less digits than its factorization.

211113120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50390 (or 50387 counting only the distinct ones).

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

Adding to 211113120213 its reverse (312021311112), we get a palindrome (523134431325).

The spelling of 211113120213 in words is "two hundred eleven billion, one hundred thirteen million, one hundred twenty thousand, two hundred thirteen".