20201121012100 has 36 divisors (see below), whose sum is σ = 50098780111744. Its totient is φ = 6926098632480.

The previous prime is 20201121012077. The next prime is 20201121012103. The reversal of 20201121012100 is 121012110202.

It is not an unprimeable number, because it can be changed into a prime (20201121012103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14429371452 + ... + 14429372851.

Almost surely, 2^{20201121012100} is an apocalyptic number.

20201121012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201121012100 is an abundant number, since it is smaller than the sum of its proper divisors (29897659099644).

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

20201121012100 is a wasteful number, since it uses less digits than its factorization.

20201121012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28858744324 (or 28858744317 counting only the distinct ones).

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

Adding to 20201121012100 its reverse (121012110202), we get a palindrome (20322133122302).

The spelling of 20201121012100 in words is "twenty trillion, two hundred one billion, one hundred twenty-one million, twelve thousand, one hundred".