104021220 has 48 divisors (see below), whose sum is σ = 291755520. Its totient is φ = 27691776.

The previous prime is 104021201. The next prime is 104021233. The reversal of 104021220 is 22120401.

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 = 104021196 and 104021205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47469 + ... + 49611.

It is an arithmetic number, because the mean of its divisors is an integer number (6078240).

Almost surely, 2^104021220 is an apocalyptic number.

104021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104021220 is an abundant number, since it is smaller than the sum of its proper divisors (187734300).

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

104021220 is a wasteful number, since it uses less digits than its factorization.

104021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964 (or 2962 counting only the distinct ones).

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

The square root of 104021220 is about 10199.0793702177. The cubic root of 104021220 is about 470.2989195499.

Adding to 104021220 its reverse (22120401), we get a palindrome (126141621).

The spelling of 104021220 in words is "one hundred four million, twenty-one thousand, two hundred twenty".