12201210121023 has 64 divisors (see below), whose sum is σ = 22603019811840. Its totient is φ = 6319482624000.

The previous prime is 12201210121019. The next prime is 12201210121033. The reversal of 12201210121023 is 32012101210221.

12201210121023 is a `hidden beast` number, since 1 + 220 + 1 + 210 + 1 + 210 + 23 = 666.

It is not a de Polignac number, because 12201210121023 - 2² = 12201210121019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201210120987 and 12201210121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201210121033) 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 63 ways as a sum of consecutive naturals, for example, 8006778 + ... + 9408023.

It is an arithmetic number, because the mean of its divisors is an integer number (353172184560).

Almost surely, 2^{12201210121023} is an apocalyptic number.

12201210121023 is a deficient number, since it is larger than the sum of its proper divisors (10401809690817).

12201210121023 is a wasteful number, since it uses less digits than its factorization.

12201210121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17415165 (or 17415159 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12201210121023 its reverse (32012101210221), we get a palindrome (44213311331244).

The spelling of 12201210121023 in words is "twelve trillion, two hundred one billion, two hundred ten million, one hundred twenty-one thousand, twenty-three".