211113041213 has 16 divisors (see below), whose sum is σ = 224041094640. Its totient is φ = 198241996800.

The previous prime is 211113041177. The next prime is 211113041219. The reversal of 211113041213 is 312140311112.

It can be written as a sum of positive squares in 8 ways, for example, as 7497308569 + 203615732644 = 86587^2 + 451238^2 .

It is a cyclic number.

It is not a de Polignac number, because 211113041213 - 2¹⁰ = 211113040189 is a prime.

It is a super-2 number, since 2×211113041213² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211113041219) 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, 23607323 + ... + 23616263.

It is an arithmetic number, because the mean of its divisors is an integer number (14002568415).

Almost surely, 2^211113041213 is an apocalyptic number.

It is an amenable number.

211113041213 is a deficient number, since it is larger than the sum of its proper divisors (12928053427).

211113041213 is a wasteful number, since it uses less digits than its factorization.

211113041213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11968.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 211113041213 its reverse (312140311112), we get a palindrome (523253352325).

The spelling of 211113041213 in words is "two hundred eleven billion, one hundred thirteen million, forty-one thousand, two hundred thirteen".