11212110331 has 2 divisors, whose sum is σ = 11212110332. Its totient is φ = 11212110330.

The previous prime is 11212110319. The next prime is 11212110347. The reversal of 11212110331 is 13301121211.

It is a happy number.

It is an a-pointer prime, because the next prime (11212110347) can be obtained adding 11212110331 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11212110331 - 2¹¹ = 11212108283 is a prime.

It is a super-2 number, since 2×11212110331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11212110391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606055165 + 5606055166.

It is an arithmetic number, because the mean of its divisors is an integer number (5606055166).

Almost surely, 2^11212110331 is an apocalyptic number.

11212110331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212110331 is an equidigital number, since it uses as much as digits as its factorization.

11212110331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11212110331 its reverse (13301121211), we get a palindrome (24513231542).

The spelling of 11212110331 in words is "eleven billion, two hundred twelve million, one hundred ten thousand, three hundred thirty-one".