10924991921 has 2 divisors, whose sum is σ = 10924991922. Its totient is φ = 10924991920.

The previous prime is 10924991893. The next prime is 10924991953. The reversal of 10924991921 is 12919942901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7793358400 + 3131633521 = 88280^2 + 55961^2 .

It is an emirp because it is prime and its reverse (12919942901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10924991921 is a prime.

It is not a weakly prime, because it can be changed into another prime (10924991971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5462495960 + 5462495961.

It is an arithmetic number, because the mean of its divisors is an integer number (5462495961).

Almost surely, 2^10924991921 is an apocalyptic number.

It is an amenable number.

10924991921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10924991921 is an equidigital number, since it uses as much as digits as its factorization.

10924991921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 47.

The spelling of 10924991921 in words is "ten billion, nine hundred twenty-four million, nine hundred ninety-one thousand, nine hundred twenty-one".