202102301220 has 192 divisors, whose sum is σ = 619234108416. Its totient is φ = 49047470080.

The previous prime is 202102301213. The next prime is 202102301243. The reversal of 202102301220 is 22103201202.

It is a happy number.

It is a super-2 number, since 2×202102301220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 202102301220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4704277 + ... + 4747043.

It is an arithmetic number, because the mean of its divisors is an integer number (3225177648).

Almost surely, 2^202102301220 is an apocalyptic number.

202102301220 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 202102301220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309617054208).

202102301220 is an abundant number, since it is smaller than the sum of its proper divisors (417131807196).

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

202102301220 is a wasteful number, since it uses less digits than its factorization.

202102301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42950 (or 42948 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 202102301220 its reverse (22103201202), we get a palindrome (224205502422).

The spelling of 202102301220 in words is "two hundred two billion, one hundred two million, three hundred one thousand, two hundred twenty".