123022651 has 2 divisors, whose sum is σ = 123022652. Its totient is φ = 123022650.

The previous prime is 123022649. The next prime is 123022657. The reversal of 123022651 is 156220321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123022651 - 2¹ = 123022649 is a prime.

Together with 123022649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123022657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61511325 + 61511326.

It is an arithmetic number, because the mean of its divisors is an integer number (61511326).

Almost surely, 2^123022651 is an apocalyptic number.

123022651 is a deficient number, since it is larger than the sum of its proper divisors (1).

123022651 is an equidigital number, since it uses as much as digits as its factorization.

123022651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 123022651 is about 11091.5576453445. The cubic root of 123022651 is about 497.3495092913.

Adding to 123022651 its reverse (156220321), we get a palindrome (279242972).

The spelling of 123022651 in words is "one hundred twenty-three million, twenty-two thousand, six hundred fifty-one".