221060768730 has 64 divisors (see below), whose sum is σ = 542967891840. Its totient is φ = 57569734656.

The previous prime is 221060768729. The next prime is 221060768737. The reversal of 221060768730 is 37867060122.

It is not an unprimeable number, because it can be changed into a prime (221060768737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14658474 + ... + 14673546.

It is an arithmetic number, because the mean of its divisors is an integer number (8483873310).

Almost surely, 2^221060768730 is an apocalyptic number.

221060768730 is an abundant number, since it is smaller than the sum of its proper divisors (321907123110).

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

221060768730 is a wasteful number, since it uses less digits than its factorization.

221060768730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26495.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 221060768730 in words is "two hundred twenty-one billion, sixty million, seven hundred sixty-eight thousand, seven hundred thirty".