10020201220 has 24 divisors (see below), whose sum is σ = 21768024600. Its totient is φ = 3869870592.

The previous prime is 10020201203. The next prime is 10020201223. The reversal of 10020201220 is 2210202001.

It can be written as a sum of positive squares in 4 ways, for example, as 42588676 + 9977612544 = 6526^2 + 99888^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10020201197 and 10020201206.

It is not an unprimeable number, because it can be changed into a prime (10020201223) 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, 8637525 + ... + 8638684.

It is an arithmetic number, because the mean of its divisors is an integer number (907001025).

Almost surely, 2^10020201220 is an apocalyptic number.

10020201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10020201220 is an abundant number, since it is smaller than the sum of its proper divisors (11747823380).

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

10020201220 is a wasteful number, since it uses less digits than its factorization.

10020201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17276247 (or 17276245 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 10020201220 its reverse (2210202001), we get a palindrome (12230403221).

The spelling of 10020201220 in words is "ten billion, twenty million, two hundred one thousand, two hundred twenty".