201021202002220 has 24 divisors (see below), whose sum is σ = 429064926243408. Its totient is φ = 79090308984000.

The previous prime is 201021202002211. The next prime is 201021202002221. The reversal of 201021202002220 is 22200202120102.

It is a junction number, because it is equal to n+sod(n) for n = 201021202002194 and 201021202002203.

It is not an unprimeable number, because it can be changed into a prime (201021202002221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82385737306 + ... + 82385739745.

It is an arithmetic number, because the mean of its divisors is an integer number (17877705260142).

Almost surely, 2^{201021202002220} is an apocalyptic number.

201021202002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021202002220 is an abundant number, since it is smaller than the sum of its proper divisors (228043724241188).

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

201021202002220 is a wasteful number, since it uses less digits than its factorization.

201021202002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164771477121 (or 164771477119 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201021202002220 its reverse (22200202120102), we get a palindrome (223221404122322).

The spelling of 201021202002220 in words is "two hundred one trillion, twenty-one billion, two hundred two million, two thousand, two hundred twenty".