201102010020 has 72 divisors (see below), whose sum is σ = 626496192504. Its totient is φ = 52177817088.

The previous prime is 201102010013. The next prime is 201102010027. The reversal of 201102010020 is 20010201102.

201102010020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201102010013) and next prime (201102010027).

It can be written as a sum of positive squares in 4 ways, for example, as 52667496036 + 148434513984 = 229494^2 + 385272^2 .

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 = 201102009984 and 201102010011.

It is not an unprimeable number, because it can be changed into a prime (201102010027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15091089 + ... + 15104408.

It is an arithmetic number, because the mean of its divisors is an integer number (8701336007).

Almost surely, 2^201102010020 is an apocalyptic number.

201102010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201102010020 is an abundant number, since it is smaller than the sum of its proper divisors (425394182484).

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

201102010020 is a wasteful number, since it uses less digits than its factorization.

201102010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30195549 (or 30195544 counting only the distinct ones).

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

Adding to 201102010020 its reverse (20010201102), we get a palindrome (221112211122).

The spelling of 201102010020 in words is "two hundred one billion, one hundred two million, ten thousand, twenty".