123100355207 has 2 divisors, whose sum is σ = 123100355208. Its totient is φ = 123100355206.

The previous prime is 123100355201. The next prime is 123100355233. The reversal of 123100355207 is 702553001321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123100355207 - 2²² = 123096160903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123100355207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123100355201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61550177603 + 61550177604.

It is an arithmetic number, because the mean of its divisors is an integer number (61550177604).

Almost surely, 2^123100355207 is an apocalyptic number.

123100355207 is a deficient number, since it is larger than the sum of its proper divisors (1).

123100355207 is an equidigital number, since it uses as much as digits as its factorization.

123100355207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 29.

Adding to 123100355207 its reverse (702553001321), we get a palindrome (825653356528).

The spelling of 123100355207 in words is "one hundred twenty-three billion, one hundred million, three hundred fifty-five thousand, two hundred seven".