123331010001 has 4 divisors (see below), whose sum is σ = 164441346672. Its totient is φ = 82220673332.

The previous prime is 123331009993. The next prime is 123331010003. The reversal of 123331010001 is 100010133321.

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 123331010001 - 2³ = 123331009993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123331010003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20555168331 + ... + 20555168336.

It is an arithmetic number, because the mean of its divisors is an integer number (41110336668).

Almost surely, 2^123331010001 is an apocalyptic number.

It is an amenable number.

123331010001 is a deficient number, since it is larger than the sum of its proper divisors (41110336671).

123331010001 is an equidigital number, since it uses as much as digits as its factorization.

123331010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41110336670.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 123331010001 its reverse (100010133321), we get a palindrome (223341143322).

The spelling of 123331010001 in words is "one hundred twenty-three billion, three hundred thirty-one million, ten thousand, one".