20001201210023 has 16 divisors (see below), whose sum is σ = 22560453058560. Its totient is φ = 17567375450400.

The previous prime is 20001201209959. The next prime is 20001201210037. The reversal of 20001201210023 is 32001210210002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20001201210023 - 2⁶ = 20001201209959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001201210323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48108128 + ... + 48522101.

It is an arithmetic number, because the mean of its divisors is an integer number (1410028316160).

Almost surely, 2^{20001201210023} is an apocalyptic number.

20001201210023 is a deficient number, since it is larger than the sum of its proper divisors (2559251848537).

20001201210023 is a wasteful number, since it uses less digits than its factorization.

20001201210023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96630878.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20001201210023 its reverse (32001210210002), we get a palindrome (52002411420025).

The spelling of 20001201210023 in words is "twenty trillion, one billion, two hundred one million, two hundred ten thousand, twenty-three".