20123100133100 has 18 divisors (see below), whose sum is σ = 43667127289044. Its totient is φ = 8049240053200.

The previous prime is 20123100133091. The next prime is 20123100133117. The reversal of 20123100133100 is 133100132102.

It is a super-2 number, since 2×20123100133100² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100615500566 + ... + 100615500765.

It is an arithmetic number, because the mean of its divisors is an integer number (2425951516058).

Almost surely, 2^{20123100133100} is an apocalyptic number.

20123100133100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123100133100 is an abundant number, since it is smaller than the sum of its proper divisors (23544027155944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123100133100 is a wasteful number, since it uses less digits than its factorization.

20123100133100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201231001345 (or 201231001338 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20123100133100 its reverse (133100132102), we get a palindrome (20256200265202).

The spelling of 20123100133100 in words is "twenty trillion, one hundred twenty-three billion, one hundred million, one hundred thirty-three thousand, one hundred".