123302400121 has 4 divisors (see below), whose sum is σ = 123309476752. Its totient is φ = 123295323492.

The previous prime is 123302400107. The next prime is 123302400157. The reversal of 123302400121 is 121004203321.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121004203321 = 17 ⋅7117894313.

It is a cyclic number.

It is not a de Polignac number, because 123302400121 - 2⁹ = 123302399609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123306400121) 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 in 3 ways as a sum of consecutive naturals, for example, 3512115 + ... + 3547048.

It is an arithmetic number, because the mean of its divisors is an integer number (30827369188).

Almost surely, 2^123302400121 is an apocalyptic number.

It is an amenable number.

123302400121 is a deficient number, since it is larger than the sum of its proper divisors (7076631).

123302400121 is an equidigital number, since it uses as much as digits as its factorization.

123302400121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7076630.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123302400121 its reverse (121004203321), we get a palindrome (244306603442).

The spelling of 123302400121 in words is "one hundred twenty-three billion, three hundred two million, four hundred thousand, one hundred twenty-one".