11211033231 has 16 divisors (see below), whose sum is σ = 17585935200. Its totient is φ = 7034373504.

The previous prime is 11211033217. The next prime is 11211033241. The reversal of 11211033231 is 13233011211.

It is not a de Polignac number, because 11211033231 - 2⁷ = 11211033103 is a prime.

It is a super-2 number, since 2×11211033231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211033241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12211996 + ... + 12212913.

It is an arithmetic number, because the mean of its divisors is an integer number (1099120950).

Almost surely, 2^11211033231 is an apocalyptic number.

11211033231 is a deficient number, since it is larger than the sum of its proper divisors (6374901969).

11211033231 is a wasteful number, since it uses less digits than its factorization.

11211033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24424935 (or 24424929 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11211033231 its reverse (13233011211), we get a palindrome (24444044442).

The spelling of 11211033231 in words is "eleven billion, two hundred eleven million, thirty-three thousand, two hundred thirty-one".