10921227109 has 8 divisors (see below), whose sum is σ = 11762186072. Its totient is φ = 10080391680.

The previous prime is 10921227047. The next prime is 10921227133. The reversal of 10921227109 is 90172212901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1722499009 + 9198728100 = 41503^2 + 95910^2 .

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 10921227109 - 2¹⁷ = 10921096037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10921207109) 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, 242269 + ... + 283789.

It is an arithmetic number, because the mean of its divisors is an integer number (1470273259).

Almost surely, 2^10921227109 is an apocalyptic number.

It is an amenable number.

10921227109 is a deficient number, since it is larger than the sum of its proper divisors (840958963).

10921227109 is a wasteful number, since it uses less digits than its factorization.

10921227109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61767.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 10921227109 in words is "ten billion, nine hundred twenty-one million, two hundred twenty-seven thousand, one hundred nine".