221060630 has 64 divisors (see below), whose sum is σ = 485637120. Its totient is φ = 70761600.

The previous prime is 221060627. The next prime is 221060641. The reversal of 221060630 is 36060122.

221060630 is digitally balanced in base 2 and base 3, 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, 93260 + ... + 95600.

It is an arithmetic number, because the mean of its divisors is an integer number (7588080).

Almost surely, 2^221060630 is an apocalyptic number.

221060630 is an abundant number, since it is smaller than the sum of its proper divisors (264576490).

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

221060630 is a wasteful number, since it uses less digits than its factorization.

221060630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 221060630 is about 14868.1078150517. The cubic root of 221060630 is about 604.6496434691.

The spelling of 221060630 in words is "two hundred twenty-one million, sixty thousand, six hundred thirty".