123021444037 has 2 divisors, whose sum is σ = 123021444038. Its totient is φ = 123021444036.

The previous prime is 123021443939. The next prime is 123021444047. The reversal of 123021444037 is 730444120321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122700281796 + 321162241 = 350286^2 + 17921^2 .

It is a cyclic number.

It is not a de Polignac number, because 123021444037 - 2³⁵ = 88661705669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123021444047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510722018 + 61510722019.

It is an arithmetic number, because the mean of its divisors is an integer number (61510722019).

Almost surely, 2^123021444037 is an apocalyptic number.

It is an amenable number.

123021444037 is a deficient number, since it is larger than the sum of its proper divisors (1).

123021444037 is an equidigital number, since it uses as much as digits as its factorization.

123021444037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 123021444037 its reverse (730444120321), we get a palindrome (853465564358).

The spelling of 123021444037 in words is "one hundred twenty-three billion, twenty-one million, four hundred forty-four thousand, thirty-seven".