22111212012151 has 2 divisors, whose sum is σ = 22111212012152. Its totient is φ = 22111212012150.

The previous prime is 22111212012047. The next prime is 22111212012167. The reversal of 22111212012151 is 15121021211122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22111212012151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111212052151) 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 as a sum of consecutive naturals, namely, 11055606006075 + 11055606006076.

It is an arithmetic number, because the mean of its divisors is an integer number (11055606006076).

Almost surely, 2^{22111212012151} is an apocalyptic number.

22111212012151 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111212012151 is an equidigital number, since it uses as much as digits as its factorization.

22111212012151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 22.

Adding to 22111212012151 its reverse (15121021211122), we get a palindrome (37232233223273).

The spelling of 22111212012151 in words is "twenty-two trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, one hundred fifty-one".