201001230020 has 24 divisors (see below), whose sum is σ = 422210674368. Its totient is φ = 80379903200.

The previous prime is 201001230019. The next prime is 201001230037. The reversal of 201001230020 is 20032100102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201001229983 and 201001230010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1206626 + ... + 1363065.

It is an arithmetic number, because the mean of its divisors is an integer number (17592111432).

Almost surely, 2^201001230020 is an apocalyptic number.

201001230020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201001230020 is an abundant number, since it is smaller than the sum of its proper divisors (221209444348).

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

201001230020 is a wasteful number, since it uses less digits than its factorization.

201001230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573611 (or 2573609 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 201001230020 its reverse (20032100102), we get a palindrome (221033330122).

The spelling of 201001230020 in words is "two hundred one billion, one million, two hundred thirty thousand, twenty".