20001101020123 has 2 divisors, whose sum is σ = 20001101020124. Its totient is φ = 20001101020122.

The previous prime is 20001101020097. The next prime is 20001101020139. The reversal of 20001101020123 is 32102010110002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001101020123 - 2⁴¹ = 17802077764571 is a prime.

It is a super-2 number, since 2×20001101020123² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20001101029123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000550510061 + 10000550510062.

It is an arithmetic number, because the mean of its divisors is an integer number (10000550510062).

Almost surely, 2^{20001101020123} is an apocalyptic number.

20001101020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001101020123 is an equidigital number, since it uses as much as digits as its factorization.

20001101020123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20001101020123 its reverse (32102010110002), we get a palindrome (52103111130125).

The spelling of 20001101020123 in words is "twenty trillion, one billion, one hundred one million, twenty thousand, one hundred twenty-three".