20001332123097 has 24 divisors (see below), whose sum is σ = 29744351267904. Its totient is φ = 11884080605376.

The previous prime is 20001332123077. The next prime is 20001332123131. The reversal of 20001332123097 is 79032123310002.

It is not a de Polignac number, because 20001332123097 - 2⁶ = 20001332123033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001332123057) 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, 304874853 + ... + 304940450.

It is an arithmetic number, because the mean of its divisors is an integer number (1239347969496).

Almost surely, 2^{20001332123097} is an apocalyptic number.

It is an amenable number.

20001332123097 is a deficient number, since it is larger than the sum of its proper divisors (9743019144807).

20001332123097 is a wasteful number, since it uses less digits than its factorization.

20001332123097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609815377 (or 609815348 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

Adding to 20001332123097 its reverse (79032123310002), we get a palindrome (99033455433099).

The spelling of 20001332123097 in words is "twenty trillion, one billion, three hundred thirty-two million, one hundred twenty-three thousand, ninety-seven".