20001233122101 has 48 divisors (see below), whose sum is σ = 36294495164928. Its totient is φ = 10310936032800.

The previous prime is 20001233122097. The next prime is 20001233122121. The reversal of 20001233122101 is 10122133210002.

20001233122101 is a `hidden beast` number, since 20 + 0 + 0 + 123 + 312 + 210 + 1 = 666.

It is not a de Polignac number, because 20001233122101 - 2² = 20001233122097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001233122121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110068791 + ... + 110250356.

It is an arithmetic number, because the mean of its divisors is an integer number (756135315936).

Almost surely, 2^{20001233122101} is an apocalyptic number.

20001233122101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20001233122101 is a deficient number, since it is larger than the sum of its proper divisors (16293262042827).

20001233122101 is a wasteful number, since it uses less digits than its factorization.

20001233122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220319302 (or 220319299 counting only the distinct ones).

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

Adding to 20001233122101 its reverse (10122133210002), we get a palindrome (30123366332103).

The spelling of 20001233122101 in words is "twenty trillion, one billion, two hundred thirty-three million, one hundred twenty-two thousand, one hundred one".