221432330000420 has 96 divisors (see below), whose sum is σ = 588403087211520. Its totient is φ = 67987751610240.

The previous prime is 221432330000407. The next prime is 221432330000443. The reversal of 221432330000420 is 24000033234122.

It is a self number, because there is not a number n which added to its sum of digits gives 221432330000420.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1072935830 + ... + 1073142189.

It is an arithmetic number, because the mean of its divisors is an integer number (6129198825120).

Almost surely, 2^{221432330000420} is an apocalyptic number.

221432330000420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221432330000420 is an abundant number, since it is smaller than the sum of its proper divisors (366970757211100).

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

221432330000420 is a wasteful number, since it uses less digits than its factorization.

221432330000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146078113 (or 2146078111 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 221432330000420 its reverse (24000033234122), we get a palindrome (245432363234542).

The spelling of 221432330000420 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, three hundred thirty million, four hundred twenty", and thus it is an aban number.