10656044436221 has 2 divisors, whose sum is σ = 10656044436222. Its totient is φ = 10656044436220.

The previous prime is 10656044436203. The next prime is 10656044436239. The reversal of 10656044436221 is 12263444065601.

It is a balanced prime because it is at equal distance from previous prime (10656044436203) and next prime (10656044436239).

It can be written as a sum of positive squares in only one way, i.e., 9411771115321 + 1244273320900 = 3067861^2 + 1115470^2 .

It is a cyclic number.

It is not a de Polignac number, because 10656044436221 - 2³⁰ = 10654970694397 is a prime.

It is a super-2 number, since 2×10656044436221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10656044426221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5328022218110 + 5328022218111.

It is an arithmetic number, because the mean of its divisors is an integer number (5328022218111).

Almost surely, 2^{10656044436221} is an apocalyptic number.

It is an amenable number.

10656044436221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10656044436221 is an equidigital number, since it uses as much as digits as its factorization.

10656044436221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 10656044436221 in words is "ten trillion, six hundred fifty-six billion, forty-four million, four hundred thirty-six thousand, two hundred twenty-one".