1233123123201 has 4 divisors (see below), whose sum is σ = 1644164164272. Its totient is φ = 822082082132.

The previous prime is 1233123123181. The next prime is 1233123123229. The reversal of 1233123123201 is 1023213213321.

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 1233123123201 - 2¹⁸ = 1233122861057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1233123123301) 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, 205520520531 + ... + 205520520536.

It is an arithmetic number, because the mean of its divisors is an integer number (411041041068).

Almost surely, 2^{1233123123201} is an apocalyptic number.

It is an amenable number.

1233123123201 is a deficient number, since it is larger than the sum of its proper divisors (411041041071).

1233123123201 is an equidigital number, since it uses as much as digits as its factorization.

1233123123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411041041070.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1233123123201 its reverse (1023213213321), we get a palindrome (2256336336522).

The spelling of 1233123123201 in words is "one trillion, two hundred thirty-three billion, one hundred twenty-three million, one hundred twenty-three thousand, two hundred one".