210202220020 has 96 divisors (see below), whose sum is σ = 486945059328. Its totient is φ = 75734894592.

The previous prime is 210202219967. The next prime is 210202220023. The reversal of 210202220020 is 20022202012.

210202220020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×210202220020³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210202220023) 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 31 ways as a sum of consecutive naturals, for example, 4092619 + ... + 4143661.

It is an arithmetic number, because the mean of its divisors is an integer number (5072344368).

Almost surely, 2^210202220020 is an apocalyptic number.

210202220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210202220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243472529664).

210202220020 is an abundant number, since it is smaller than the sum of its proper divisors (276742839308).

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

210202220020 is a wasteful number, since it uses less digits than its factorization.

210202220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51449 (or 51447 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 210202220020 its reverse (20022202012), we get a palindrome (230224422032).

The spelling of 210202220020 in words is "two hundred ten billion, two hundred two million, two hundred twenty thousand, twenty".