921849198211 has 2 divisors, whose sum is σ = 921849198212. Its totient is φ = 921849198210.

The previous prime is 921849198203. The next prime is 921849198217. The reversal of 921849198211 is 112891948129.

It is a strong prime.

It is an emirp because it is prime and its reverse (112891948129) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 921849198211 - 2³ = 921849198203 is a prime.

It is not a weakly prime, because it can be changed into another prime (921849198217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460924599105 + 460924599106.

It is an arithmetic number, because the mean of its divisors is an integer number (460924599106).

Almost surely, 2^921849198211 is an apocalyptic number.

921849198211 is a deficient number, since it is larger than the sum of its proper divisors (1).

921849198211 is an equidigital number, since it uses as much as digits as its factorization.

921849198211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 55.

The spelling of 921849198211 in words is "nine hundred twenty-one billion, eight hundred forty-nine million, one hundred ninety-eight thousand, two hundred eleven".