20201121120100 has 18 divisors (see below), whose sum is σ = 43836432830834. Its totient is φ = 8080448448000.

The previous prime is 20201121120097. The next prime is 20201121120179. The reversal of 20201121120100 is 102112110202.

It can be written as a sum of positive squares in 3 ways, for example, as 3343543903296 + 16857577216804 = 1828536^2 + 4105798^2 .

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, 101005605501 + ... + 101005605700.

Almost surely, 2^{20201121120100} is an apocalyptic number.

20201121120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201121120100 is an abundant number, since it is smaller than the sum of its proper divisors (23635311710734).

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

20201121120100 is a wasteful number, since it uses less digits than its factorization.

20201121120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202011211215 (or 202011211208 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20201121120100 its reverse (102112110202), we get a palindrome (20303233230302).

The spelling of 20201121120100 in words is "twenty trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty thousand, one hundred".