123021022147 has 2 divisors, whose sum is σ = 123021022148. Its totient is φ = 123021022146.

The previous prime is 123021022127. The next prime is 123021022199. The reversal of 123021022147 is 741220120321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123021022147 is a prime.

It is not a weakly prime, because it can be changed into another prime (123021022127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510511073 + 61510511074.

It is an arithmetic number, because the mean of its divisors is an integer number (61510511074).

Almost surely, 2^123021022147 is an apocalyptic number.

123021022147 is a deficient number, since it is larger than the sum of its proper divisors (1).

123021022147 is an equidigital number, since it uses as much as digits as its factorization.

123021022147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 123021022147 its reverse (741220120321), we get a palindrome (864241142468).

The spelling of 123021022147 in words is "one hundred twenty-three billion, twenty-one million, twenty-two thousand, one hundred forty-seven".