104221020 has 24 divisors (see below), whose sum is σ = 291819024. Its totient is φ = 27792256.

The previous prime is 104221009. The next prime is 104221031. The reversal of 104221020 is 20122401.

It is an interprime number because it is at equal distance from previous prime (104221009) and next prime (104221031).

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 = 104220987 and 104221005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868449 + ... + 868568.

It is an arithmetic number, because the mean of its divisors is an integer number (12159126).

Almost surely, 2^104221020 is an apocalyptic number.

104221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104221020 is an abundant number, since it is smaller than the sum of its proper divisors (187598004).

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

104221020 is a wasteful number, since it uses less digits than its factorization.

104221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737029 (or 1737027 counting only the distinct ones).

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

The square root of 104221020 is about 10208.8696729853. The cubic root of 104221020 is about 470.5998377225.

Adding to 104221020 its reverse (20122401), we get a palindrome (124343421).

The spelling of 104221020 in words is "one hundred four million, two hundred twenty-one thousand, twenty".