201010210020 has 36 divisors (see below), whose sum is σ = 609730970940. Its totient is φ = 53602722624.

The previous prime is 201010210019. The next prime is 201010210031. The reversal of 201010210020 is 20012010102.

It can be written as a sum of positive squares in 2 ways, for example, as 94194975744 + 106815234276 = 306912^2 + 326826^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201010209984 and 201010210011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558361515 + ... + 558361874.

It is an arithmetic number, because the mean of its divisors is an integer number (16936971415).

Almost surely, 2^201010210020 is an apocalyptic number.

201010210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201010210020 is an abundant number, since it is smaller than the sum of its proper divisors (408720760920).

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

201010210020 is a wasteful number, since it uses less digits than its factorization.

201010210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116723404 (or 1116723399 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201010210020 its reverse (20012010102), we get a palindrome (221022220122).

The spelling of 201010210020 in words is "two hundred one billion, ten million, two hundred ten thousand, twenty".