11201231213 has 2 divisors, whose sum is σ = 11201231214. Its totient is φ = 11201231212.

The previous prime is 11201231141. The next prime is 11201231221. The reversal of 11201231213 is 31213210211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10244071369 + 957159844 = 101213^2 + 30938^2 .

It is an emirp because it is prime and its reverse (31213210211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11201231213 - 2¹⁸ = 11200969069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11201231191 and 11201231200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11201231233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600615606 + 5600615607.

It is an arithmetic number, because the mean of its divisors is an integer number (5600615607).

Almost surely, 2^11201231213 is an apocalyptic number.

It is an amenable number.

11201231213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201231213 is an equidigital number, since it uses as much as digits as its factorization.

11201231213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11201231213 its reverse (31213210211), we get a palindrome (42414441424).

The spelling of 11201231213 in words is "eleven billion, two hundred one million, two hundred thirty-one thousand, two hundred thirteen".