221413237620 has 48 divisors (see below), whose sum is σ = 620028689280. Its totient is φ = 59036708736.

The previous prime is 221413237559. The next prime is 221413237667. The reversal of 221413237620 is 26732314122.

221413237620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321594 + ... + 739086.

It is an arithmetic number, because the mean of its divisors is an integer number (12917264360).

Almost surely, 2^221413237620 is an apocalyptic number.

221413237620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221413237620 is an abundant number, since it is smaller than the sum of its proper divisors (398615451660).

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

221413237620 is a wasteful number, since it uses less digits than its factorization.

221413237620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426344 (or 426342 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 221413237620 in words is "two hundred twenty-one billion, four hundred thirteen million, two hundred thirty-seven thousand, six hundred twenty".