11212331651 has 2 divisors, whose sum is σ = 11212331652. Its totient is φ = 11212331650.

The previous prime is 11212331563. The next prime is 11212331677. The reversal of 11212331651 is 15613321211.

It is an a-pointer prime, because the next prime (11212331677) can be obtained adding 11212331651 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212331651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11212331651.

It is not a weakly prime, because it can be changed into another prime (11212333651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606165825 + 5606165826.

It is an arithmetic number, because the mean of its divisors is an integer number (5606165826).

Almost surely, 2^11212331651 is an apocalyptic number.

11212331651 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212331651 is an equidigital number, since it uses as much as digits as its factorization.

11212331651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 26.

Adding to 11212331651 its reverse (15613321211), we get a palindrome (26825652862).

The spelling of 11212331651 in words is "eleven billion, two hundred twelve million, three hundred thirty-one thousand, six hundred fifty-one".