10921205669 has 16 divisors (see below), whose sum is σ = 12048791040. Its totient is φ = 9816386160.

The previous prime is 10921205663. The next prime is 10921205717. The reversal of 10921205669 is 96650212901.

It is a de Polignac number, because none of the positive numbers 2^k-10921205669 is a prime.

It is a super-2 number, since 2×10921205669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10921205663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739334 + ... + 753960.

It is an arithmetic number, because the mean of its divisors is an integer number (753049440).

Almost surely, 2^10921205669 is an apocalyptic number.

It is an amenable number.

10921205669 is a deficient number, since it is larger than the sum of its proper divisors (1127585371).

10921205669 is a wasteful number, since it uses less digits than its factorization.

10921205669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15400.

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 10921205669 in words is "ten billion, nine hundred twenty-one million, two hundred five thousand, six hundred sixty-nine".