201201202020020 has 96 divisors (see below), whose sum is σ = 423577277061120. Its totient is φ = 80279921111040.

The previous prime is 201201202019977. The next prime is 201201202020023. The reversal of 201201202020020 is 20020202102102.

It is a junction number, because it is equal to n+sod(n) for n = 201201202019977 and 201201202020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201202020023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69885792941 + ... + 69885795819.

It is an arithmetic number, because the mean of its divisors is an integer number (4412263302720).

Almost surely, 2^{201201202020020} is an apocalyptic number.

201201202020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201201202020020 is an abundant number, since it is smaller than the sum of its proper divisors (222376075041100).

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

201201202020020 is a wasteful number, since it uses less digits than its factorization.

201201202020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785 (or 7783 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 201201202020020 its reverse (20020202102102), we get a palindrome (221221404122122).

The spelling of 201201202020020 in words is "two hundred one trillion, two hundred one billion, two hundred two million, twenty thousand, twenty".