10912940821 has 2 divisors, whose sum is σ = 10912940822. Its totient is φ = 10912940820.

The previous prime is 10912940813. The next prime is 10912940837. The reversal of 10912940821 is 12804921901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10880576100 + 32364721 = 104310^2 + 5689^2 .

It is a cyclic number.

It is not a de Polignac number, because 10912940821 - 2³ = 10912940813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10912940851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5456470410 + 5456470411.

It is an arithmetic number, because the mean of its divisors is an integer number (5456470411).

Almost surely, 2^10912940821 is an apocalyptic number.

It is an amenable number.

10912940821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10912940821 is an equidigital number, since it uses as much as digits as its factorization.

10912940821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 10912940821 in words is "ten billion, nine hundred twelve million, nine hundred forty thousand, eight hundred twenty-one".