221060769241 has 27 divisors (see below), whose sum is σ = 243897313149. Its totient is φ = 200270277792.

The previous prime is 221060769211. The next prime is 221060769247. The reversal of 221060769241 is 142967060122.

The square root of 221060769241 is 470171.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 178904466841 + 42156302400 = 422971^2 + 205320^2 .

It is not a de Polignac number, because 221060769241 - 2⁹ = 221060768729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221060769194 and 221060769203.

It is not an unprimeable number, because it can be changed into a prime (221060769247) 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 26 ways as a sum of consecutive naturals, for example, 360620851 + ... + 360621463.

Almost surely, 2^221060769241 is an apocalyptic number.

221060769241 is the 470171-st square number.

221060769241 is the 235086-th centered octagonal number.

It is an amenable number.

221060769241 is a deficient number, since it is larger than the sum of its proper divisors (22836543908).

221060769241 is an frugal number, since it uses more digits than its factorization.

221060769241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 221060769241 in words is "two hundred twenty-one billion, sixty million, seven hundred sixty-nine thousand, two hundred forty-one".