10649566709221 has 8 divisors (see below), whose sum is σ = 12018319797600. Its totient is φ = 9347582064240.

The previous prime is 10649566709191. The next prime is 10649566709233. The reversal of 10649566709221 is 12290766594601.

10649566709221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10649566709221 - 2²⁹ = 10649029838309 is a prime.

It is a super-2 number, since 2×10649566709221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10649566709261) 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, 16692110511 + ... + 16692111148.

It is an arithmetic number, because the mean of its divisors is an integer number (1502289974700).

Almost surely, 2^{10649566709221} is an apocalyptic number.

10649566709221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10649566709221 is a deficient number, since it is larger than the sum of its proper divisors (1368753088379).

10649566709221 is a wasteful number, since it uses less digits than its factorization.

10649566709221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33384221699.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 10649566709221 in words is "ten trillion, six hundred forty-nine billion, five hundred sixty-six million, seven hundred nine thousand, two hundred twenty-one".