11211201112231 has 2 divisors, whose sum is σ = 11211201112232. Its totient is φ = 11211201112230.

The previous prime is 11211201112043. The next prime is 11211201112249. The reversal of 11211201112231 is 13221110211211.

11211201112231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211201112231 is a prime.

It is a super-2 number, since 2×11211201112231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11211201112199 and 11211201112208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211201112261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605600556115 + 5605600556116.

It is an arithmetic number, because the mean of its divisors is an integer number (5605600556116).

Almost surely, 2^{11211201112231} is an apocalyptic number.

11211201112231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211201112231 is an equidigital number, since it uses as much as digits as its factorization.

11211201112231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11211201112231 its reverse (13221110211211), we get a palindrome (24432311323442).

The spelling of 11211201112231 in words is "eleven trillion, two hundred eleven billion, two hundred one million, one hundred twelve thousand, two hundred thirty-one".