123011322001 has 4 divisors (see below), whose sum is σ = 124743875904. Its totient is φ = 121278768100.

The previous prime is 123011321987. The next prime is 123011322047. The reversal of 123011322001 is 100223110321.

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: 100223110321 = 293 ⋅342058397.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123011322001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123011322101) 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, 866276845 + ... + 866276986.

It is an arithmetic number, because the mean of its divisors is an integer number (31185968976).

Almost surely, 2^123011322001 is an apocalyptic number.

It is an amenable number.

123011322001 is a deficient number, since it is larger than the sum of its proper divisors (1732553903).

123011322001 is an equidigital number, since it uses as much as digits as its factorization.

123011322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732553902.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 123011322001 its reverse (100223110321), we get a palindrome (223234432322).

The spelling of 123011322001 in words is "one hundred twenty-three billion, eleven million, three hundred twenty-two thousand, one".