201021112010020 has 24 divisors (see below), whose sum is σ = 425366811067968. Its totient is φ = 79794639880800.

The previous prime is 201021112010011. The next prime is 201021112010021. The reversal of 201021112010020 is 20010211120102.

It is not an unprimeable number, because it can be changed into a prime (201021112010021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38362805016 + ... + 38362810255.

It is an arithmetic number, because the mean of its divisors is an integer number (17723617127832).

Almost surely, 2^{201021112010020} is an apocalyptic number.

201021112010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021112010020 is an abundant number, since it is smaller than the sum of its proper divisors (224345699057948).

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

201021112010020 is a wasteful number, since it uses less digits than its factorization.

201021112010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76725615411 (or 76725615409 counting only the distinct ones).

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

Adding to 201021112010020 its reverse (20010211120102), we get a palindrome (221031323130122).

The spelling of 201021112010020 in words is "two hundred one trillion, twenty-one billion, one hundred twelve million, ten thousand, twenty".