11231001211 has 2 divisors, whose sum is σ = 11231001212. Its totient is φ = 11231001210.

The previous prime is 11231001179. The next prime is 11231001217. The reversal of 11231001211 is 11210013211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11231001211 - 2⁵ = 11231001179 is a prime.

It is a super-2 number, since 2×11231001211² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11231001191 and 11231001200.

It is not a weakly prime, because it can be changed into another prime (11231001217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615500605 + 5615500606.

It is an arithmetic number, because the mean of its divisors is an integer number (5615500606).

Almost surely, 2^11231001211 is an apocalyptic number.

11231001211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231001211 is an equidigital number, since it uses as much as digits as its factorization.

11231001211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11231001211 its reverse (11210013211), we get a palindrome (22441014422).

The spelling of 11231001211 in words is "eleven billion, two hundred thirty-one million, one thousand, two hundred eleven".