11212333212231 has 64 divisors (see below), whose sum is σ = 17299987299840. Its totient is φ = 7170546643200.

The previous prime is 11212333212203. The next prime is 11212333212239. The reversal of 11212333212231 is 13221233321211.

11212333212231 is a `hidden beast` number, since 1 + 1 + 212 + 3 + 3 + 3 + 212 + 231 = 666.

It is not a de Polignac number, because 11212333212231 - 2⁹ = 11212333211719 is a prime.

It is a super-2 number, since 2×11212333212231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11212333212195 and 11212333212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212333212239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 204386956 + ... + 204441806.

It is an arithmetic number, because the mean of its divisors is an integer number (270312301560).

Almost surely, 2^{11212333212231} is an apocalyptic number.

11212333212231 is a deficient number, since it is larger than the sum of its proper divisors (6087654087609).

11212333212231 is a wasteful number, since it uses less digits than its factorization.

11212333212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57773 (or 57767 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 11212333212231 its reverse (13221233321211), we get a palindrome (24433566533442).

The spelling of 11212333212231 in words is "eleven trillion, two hundred twelve billion, three hundred thirty-three million, two hundred twelve thousand, two hundred thirty-one".