221605505233230 has 64 divisors (see below), whose sum is σ = 539155948601088. Its totient is φ = 58283437559040.

The previous prime is 221605505233163. The next prime is 221605505233243. The reversal of 221605505233230 is 32332505506122.

221605505233230 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 68254797 + ... + 71427783.

It is an arithmetic number, because the mean of its divisors is an integer number (8424311696892).

Almost surely, 2^{221605505233230} is an apocalyptic number.

221605505233230 is an abundant number, since it is smaller than the sum of its proper divisors (317550443367858).

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

221605505233230 is a wasteful number, since it uses less digits than its factorization.

221605505233230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204961.

The product of its (nonzero) digits is 324000, while the sum is 39.

The spelling of 221605505233230 in words is "two hundred twenty-one trillion, six hundred five billion, five hundred five million, two hundred thirty-three thousand, two hundred thirty".