11203212213 has 6 divisors (see below), whose sum is σ = 16182417654. Its totient is φ = 7468808136.

The previous prime is 11203212197. The next prime is 11203212247. The reversal of 11203212213 is 31221230211.

11203212213 is a `hidden beast` number, since 1 + 120 + 321 + 221 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8042861124 + 3160351089 = 89682^2 + 56217^2 .

It is not a de Polignac number, because 11203212213 - 2⁴ = 11203212197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203212113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622400670 + ... + 622400687.

It is an arithmetic number, because the mean of its divisors is an integer number (2697069609).

Almost surely, 2^11203212213 is an apocalyptic number.

It is an amenable number.

11203212213 is a deficient number, since it is larger than the sum of its proper divisors (4979205441).

11203212213 is a wasteful number, since it uses less digits than its factorization.

11203212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244801363 (or 1244801360 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11203212213 its reverse (31221230211), we get a palindrome (42424442424).

The spelling of 11203212213 in words is "eleven billion, two hundred three million, two hundred twelve thousand, two hundred thirteen".