221675020 has 36 divisors (see below), whose sum is σ = 541522800. Its totient is φ = 76002528.

The previous prime is 221675011. The next prime is 221675023. The reversal of 221675020 is 20576122.

221675020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221675023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112120 + ... + 114079.

It is an arithmetic number, because the mean of its divisors is an integer number (15042300).

Almost surely, 2^221675020 is an apocalyptic number.

221675020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221675020 is an abundant number, since it is smaller than the sum of its proper divisors (319847780).

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

221675020 is a wasteful number, since it uses less digits than its factorization.

221675020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226222 (or 226213 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 221675020 is about 14888.7548169751. The cubic root of 221675020 is about 605.2092894293.

The spelling of 221675020 in words is "two hundred twenty-one million, six hundred seventy-five thousand, twenty".