201001022020020 has 48 divisors (see below), whose sum is σ = 563009092551360. Its totient is φ = 53580631501056.

The previous prime is 201001022019977. The next prime is 201001022020021. The reversal of 201001022020020 is 20020220100102.

201001022020020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 201001022019978 and 201001022020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001022020021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613617322 + ... + 613944801.

It is an arithmetic number, because the mean of its divisors is an integer number (11729356094820).

Almost surely, 2^{201001022020020} is an apocalyptic number.

201001022020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201001022020020 is an abundant number, since it is smaller than the sum of its proper divisors (362008070531340).

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

201001022020020 is a wasteful number, since it uses less digits than its factorization.

201001022020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227564864 (or 1227564862 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 201001022020020 its reverse (20020220100102), we get a palindrome (221021242120122).

The spelling of 201001022020020 in words is "two hundred one trillion, one billion, twenty-two million, twenty thousand, twenty".