1004201220 has 96 divisors (see below), whose sum is σ = 3247848576. Its totient is φ = 229120000.

The previous prime is 1004201207. The next prime is 1004201221. The reversal of 1004201220 is 221024001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1004201196 and 1004201205.

It is not an unprimeable number, because it can be changed into a prime (1004201221) 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, 33531 + ... + 55970.

It is an arithmetic number, because the mean of its divisors is an integer number (33831756).

Almost surely, 2^1004201220 is an apocalyptic number.

1004201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004201220 is an abundant number, since it is smaller than the sum of its proper divisors (2243647356).

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

1004201220 is a wasteful number, since it uses less digits than its factorization.

1004201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89541 (or 89539 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1004201220 is about 31689.1340998772. The cubic root of 1004201220 is about 1001.3984500924.

Adding to 1004201220 its reverse (221024001), we get a palindrome (1225225221).

The spelling of 1004201220 in words is "one billion, four million, two hundred one thousand, two hundred twenty".