12211312051 has 2 divisors, whose sum is σ = 12211312052. Its totient is φ = 12211312050.

The previous prime is 12211312049. The next prime is 12211312093. The reversal of 12211312051 is 15021311221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12211312051 - 2¹ = 12211312049 is a prime.

It is a super-2 number, since 2×12211312051² (a number of 21 digits) contains 22 as substring.

Together with 12211312049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12211322051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105656025 + 6105656026.

It is an arithmetic number, because the mean of its divisors is an integer number (6105656026).

Almost surely, 2^12211312051 is an apocalyptic number.

12211312051 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211312051 is an equidigital number, since it uses as much as digits as its factorization.

12211312051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 12211312051 its reverse (15021311221), we get a palindrome (27232623272).

The spelling of 12211312051 in words is "twelve billion, two hundred eleven million, three hundred twelve thousand, fifty-one".