921903116441 has 2 divisors, whose sum is σ = 921903116442. Its totient is φ = 921903116440.

The previous prime is 921903116389. The next prime is 921903116471. The reversal of 921903116441 is 144611309129.

921903116441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 815822626441 + 106080490000 = 903229^2 + 325700^2 .

It is a cyclic number.

It is not a de Polignac number, because 921903116441 - 2¹⁰ = 921903115417 is a prime.

It is a super-2 number, since 2×921903116441² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (921903116471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460951558220 + 460951558221.

It is an arithmetic number, because the mean of its divisors is an integer number (460951558221).

Almost surely, 2^921903116441 is an apocalyptic number.

It is an amenable number.

921903116441 is a deficient number, since it is larger than the sum of its proper divisors (1).

921903116441 is an equidigital number, since it uses as much as digits as its factorization.

921903116441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 921903116441 in words is "nine hundred twenty-one billion, nine hundred three million, one hundred sixteen thousand, four hundred forty-one".