11212233031231 has 16 divisors (see below), whose sum is σ = 11436665127840. Its totient is φ = 10988281249920.

The previous prime is 11212233031201. The next prime is 11212233031303. The reversal of 11212233031231 is 13213033221211.

It is a cyclic number.

It is not a de Polignac number, because 11212233031231 - 2¹¹ = 11212233029183 is a prime.

It is a super-2 number, since 2×11212233031231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212233031196 and 11212233031205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212233031201) 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, 564525241 + ... + 564545101.

It is an arithmetic number, because the mean of its divisors is an integer number (714791570490).

Almost surely, 2^{11212233031231} is an apocalyptic number.

11212233031231 is a deficient number, since it is larger than the sum of its proper divisors (224432096609).

11212233031231 is a wasteful number, since it uses less digits than its factorization.

11212233031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31386.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 11212233031231 its reverse (13213033221211), we get a palindrome (24425266252442).

The spelling of 11212233031231 in words is "eleven trillion, two hundred twelve billion, two hundred thirty-three million, thirty-one thousand, two hundred thirty-one".