10766706221 has 2 divisors, whose sum is σ = 10766706222. Its totient is φ = 10766706220.

The previous prime is 10766706217. The next prime is 10766706227. The reversal of 10766706221 is 12260766701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10647350596 + 119355625 = 103186^2 + 10925^2 .

It is a cyclic number.

It is not a de Polignac number, because 10766706221 - 2² = 10766706217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10766706227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5383353110 + 5383353111.

It is an arithmetic number, because the mean of its divisors is an integer number (5383353111).

Almost surely, 2^10766706221 is an apocalyptic number.

It is an amenable number.

10766706221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10766706221 is an equidigital number, since it uses as much as digits as its factorization.

10766706221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 10766706221 in words is "ten billion, seven hundred sixty-six million, seven hundred six thousand, two hundred twenty-one".