123021203113 has 2 divisors, whose sum is σ = 123021203114. Its totient is φ = 123021203112.

The previous prime is 123021203099. The next prime is 123021203141. The reversal of 123021203113 is 311302120321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75979063449 + 47042139664 = 275643^2 + 216892^2 .

It is a cyclic number.

It is not a de Polignac number, because 123021203113 - 2³³ = 114431268521 is a prime.

It is not a weakly prime, because it can be changed into another prime (123021203143) 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, 61510601556 + 61510601557.

It is an arithmetic number, because the mean of its divisors is an integer number (61510601557).

Almost surely, 2^123021203113 is an apocalyptic number.

It is an amenable number.

123021203113 is a deficient number, since it is larger than the sum of its proper divisors (1).

123021203113 is an equidigital number, since it uses as much as digits as its factorization.

123021203113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123021203113 its reverse (311302120321), we get a palindrome (434323323434).

The spelling of 123021203113 in words is "one hundred twenty-three billion, twenty-one million, two hundred three thousand, one hundred thirteen".