10811828921 has 2 divisors, whose sum is σ = 10811828922. Its totient is φ = 10811828920.

The previous prime is 10811828903. The next prime is 10811828947. The reversal of 10811828921 is 12982811801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5781473296 + 5030355625 = 76036^2 + 70925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10811828921 is a prime.

It is not a weakly prime, because it can be changed into another prime (10811828971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5405914460 + 5405914461.

It is an arithmetic number, because the mean of its divisors is an integer number (5405914461).

Almost surely, 2^10811828921 is an apocalyptic number.

It is an amenable number.

10811828921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10811828921 is an equidigital number, since it uses as much as digits as its factorization.

10811828921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 41.

The spelling of 10811828921 in words is "ten billion, eight hundred eleven million, eight hundred twenty-eight thousand, nine hundred twenty-one".