123001212123001 has 4 divisors (see below), whose sum is σ = 123001729809552. Its totient is φ = 123000694436452.

The previous prime is 123001212122959. The next prime is 123001212123029. The reversal of 123001212123001 is 100321212100321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123001212123001 - 2⁹ = 123001212122489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123001212123001.

It is not an unprimeable number, because it can be changed into a prime (123001212123071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258486715 + ... + 258962128.

It is an arithmetic number, because the mean of its divisors is an integer number (30750432452388).

Almost surely, 2^{123001212123001} is an apocalyptic number.

It is an amenable number.

123001212123001 is a deficient number, since it is larger than the sum of its proper divisors (517686551).

123001212123001 is an equidigital number, since it uses as much as digits as its factorization.

123001212123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517686550.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123001212123001 its reverse (100321212100321), we get a palindrome (223322424223322).

The spelling of 123001212123001 in words is "one hundred twenty-three trillion, one billion, two hundred twelve million, one hundred twenty-three thousand, one".