121232123001 has 24 divisors (see below), whose sum is σ = 202269641184. Its totient is φ = 69152012160.

The previous prime is 121232122981. The next prime is 121232123003. The reversal of 121232123001 is 100321232121.

121232123001 is a `hidden beast` number, since 121 + 232 + 12 + 300 + 1 = 666.

It is not a de Polignac number, because 121232123001 - 2⁷ = 121232122873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121232123003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36014991 + ... + 36018356.

It is an arithmetic number, because the mean of its divisors is an integer number (8427901716).

Almost surely, 2^121232123001 is an apocalyptic number.

121232123001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121232123001 is a deficient number, since it is larger than the sum of its proper divisors (81037518183).

121232123001 is a wasteful number, since it uses less digits than its factorization.

121232123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72033381 (or 72033378 counting only the distinct ones).

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

Adding to 121232123001 its reverse (100321232121), we get a palindrome (221553355122).

The spelling of 121232123001 in words is "one hundred twenty-one billion, two hundred thirty-two million, one hundred twenty-three thousand, one".