221115706064 has 40 divisors (see below), whose sum is σ = 467583554880. Its totient is φ = 100458675200.

The previous prime is 221115706061. The next prime is 221115706087. The reversal of 221115706064 is 460607511122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221115706061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64397 + ... + 668115.

It is an arithmetic number, because the mean of its divisors is an integer number (11689588872).

Almost surely, 2^221115706064 is an apocalyptic number.

It is an amenable number.

221115706064 is an abundant number, since it is smaller than the sum of its proper divisors (246467848816).

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

221115706064 is a wasteful number, since it uses less digits than its factorization.

221115706064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605819 (or 605813 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 221115706064 in words is "two hundred twenty-one billion, one hundred fifteen million, seven hundred six thousand, sixty-four".