221301043020 has 36 divisors (see below), whose sum is σ = 671279831040. Its totient is φ = 59013611424.

The previous prime is 221301042983. The next prime is 221301043043. The reversal of 221301043020 is 20340103122.

221301043020 is a `hidden beast` number, since 2 + 213 + 0 + 1 + 0 + 430 + 20 = 666.

221301043020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221301042984 and 221301043002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 614724940 + ... + 614725299.

Almost surely, 2^221301043020 is an apocalyptic number.

221301043020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221301043020 is an abundant number, since it is smaller than the sum of its proper divisors (449978788020).

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

221301043020 is a wasteful number, since it uses less digits than its factorization.

221301043020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229450254 (or 1229450249 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 221301043020 its reverse (20340103122), we get a palindrome (241641146142).

The spelling of 221301043020 in words is "two hundred twenty-one billion, three hundred one million, forty-three thousand, twenty".