123211223001 has 12 divisors (see below), whose sum is σ = 181758400512. Its totient is φ = 80393138136.

The previous prime is 123211222991. The next prime is 123211223039. The reversal of 123211223001 is 100322112321.

It is not a de Polignac number, because 123211223001 - 2⁷ = 123211222873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123211223081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145639321 + ... + 145640166.

It is an arithmetic number, because the mean of its divisors is an integer number (15146533376).

Almost surely, 2^123211223001 is an apocalyptic number.

It is an amenable number.

123211223001 is a deficient number, since it is larger than the sum of its proper divisors (58547177511).

123211223001 is a wasteful number, since it uses less digits than its factorization.

123211223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291279540 (or 291279537 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123211223001 its reverse (100322112321), we get a palindrome (223533335322).

The spelling of 123211223001 in words is "one hundred twenty-three billion, two hundred eleven million, two hundred twenty-three thousand, one".