123522001 has 2 divisors, whose sum is σ = 123522002. Its totient is φ = 123522000.

The previous prime is 123521999. The next prime is 123522013. The reversal of 123522001 is 100225321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89870400 + 33651601 = 9480^2 + 5801^2 .

It is a cyclic number.

It is not a de Polignac number, because 123522001 - 2¹ = 123521999 is a prime.

Together with 123521999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123522041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61761000 + 61761001.

It is an arithmetic number, because the mean of its divisors is an integer number (61761001).

Almost surely, 2^123522001 is an apocalyptic number.

It is an amenable number.

123522001 is a deficient number, since it is larger than the sum of its proper divisors (1).

123522001 is an equidigital number, since it uses as much as digits as its factorization.

123522001 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 16.

The square root of 123522001 is about 11114.0452131526. The cubic root of 123522001 is about 498.0215161964.

Adding to 123522001 its reverse (100225321), we get a palindrome (223747322).

The spelling of 123522001 in words is "one hundred twenty-three million, five hundred twenty-two thousand, one".