11210211231 has 4 divisors (see below), whose sum is σ = 14946948312. Its totient is φ = 7473474152.

The previous prime is 11210211191. The next prime is 11210211269. The reversal of 11210211231 is 13211201211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11210211231 - 2⁶ = 11210211167 is a prime.

It is a super-2 number, since 2×11210211231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11210211231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210215231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868368536 + ... + 1868368541.

It is an arithmetic number, because the mean of its divisors is an integer number (3736737078).

Almost surely, 2^11210211231 is an apocalyptic number.

11210211231 is a deficient number, since it is larger than the sum of its proper divisors (3736737081).

11210211231 is an equidigital number, since it uses as much as digits as its factorization.

11210211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736737080.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11210211231 its reverse (13211201211), we get a palindrome (24421412442).

The spelling of 11210211231 in words is "eleven billion, two hundred ten million, two hundred eleven thousand, two hundred thirty-one".