20101320123100 has 36 divisors (see below), whose sum is σ = 44005881193344. Its totient is φ = 7969372929280.

The previous prime is 20101320123047. The next prime is 20101320123163. The reversal of 20101320123100 is 132102310102.

It is a super-2 number, since 2×20101320123100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889427644 + ... + 889450243.

It is an arithmetic number, because the mean of its divisors is an integer number (1222385588704).

Almost surely, 2^{20101320123100} is an apocalyptic number.

20101320123100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101320123100 is an abundant number, since it is smaller than the sum of its proper divisors (23904561070244).

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

20101320123100 is a wasteful number, since it uses less digits than its factorization.

20101320123100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778878014 (or 1778878007 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20101320123100 its reverse (132102310102), we get a palindrome (20233422433202).

The spelling of 20101320123100 in words is "twenty trillion, one hundred one billion, three hundred twenty million, one hundred twenty-three thousand, one hundred".