122512147 has 2 divisors, whose sum is σ = 122512148. Its totient is φ = 122512146.

The previous prime is 122512087. The next prime is 122512163. The reversal of 122512147 is 741215221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122512147 is a prime.

It is not a weakly prime, because it can be changed into another prime (122515147) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61256073 + 61256074.

It is an arithmetic number, because the mean of its divisors is an integer number (61256074).

Almost surely, 2^122512147 is an apocalyptic number.

122512147 is a deficient number, since it is larger than the sum of its proper divisors (1).

122512147 is an equidigital number, since it uses as much as digits as its factorization.

122512147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 25.

The square root of 122512147 is about 11068.5205425115. The cubic root of 122512147 is about 496.6606092580.

Adding to 122512147 its reverse (741215221), we get a palindrome (863727368).

The spelling of 122512147 in words is "one hundred twenty-two million, five hundred twelve thousand, one hundred forty-seven".