221403023020 has 48 divisors (see below), whose sum is σ = 469238642208. Its totient is φ = 87746112000.

The previous prime is 221403022991. The next prime is 221403023047. The reversal of 221403023020 is 20320304122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1355770 + ... + 1510270.

It is an arithmetic number, because the mean of its divisors is an integer number (9775805046).

Almost surely, 2^221403023020 is an apocalyptic number.

221403023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221403023020 is an abundant number, since it is smaller than the sum of its proper divisors (247835619188).

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

221403023020 is a wasteful number, since it uses less digits than its factorization.

221403023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155170 (or 155168 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 221403023020 its reverse (20320304122), we get a palindrome (241723327142).

The spelling of 221403023020 in words is "two hundred twenty-one billion, four hundred three million, twenty-three thousand, twenty".