202101031220 has 96 divisors (see below), whose sum is σ = 487617822720. Its totient is φ = 69586957440.

The previous prime is 202101031217. The next prime is 202101031229. The reversal of 202101031220 is 22130101202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202101031195 and 202101031204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202101031229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8712077 + ... + 8735243.

It is an arithmetic number, because the mean of its divisors is an integer number (5079352320).

Almost surely, 2^202101031220 is an apocalyptic number.

202101031220 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 202101031220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243808911360).

202101031220 is an abundant number, since it is smaller than the sum of its proper divisors (285516791500).

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

202101031220 is a wasteful number, since it uses less digits than its factorization.

202101031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25293 (or 25291 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 202101031220 its reverse (22130101202), we get a palindrome (224231132422).

The spelling of 202101031220 in words is "two hundred two billion, one hundred one million, thirty-one thousand, two hundred twenty".