921000011120213 has 2 divisors, whose sum is σ = 921000011120214. Its totient is φ = 921000011120212.

The previous prime is 921000011120179. The next prime is 921000011120227. The reversal of 921000011120213 is 312021110000129.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918957875805124 + 2042135315089 = 30314318^2 + 1429033^2 .

It is an emirp because it is prime and its reverse (312021110000129) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 921000011120213 - 2³⁰ = 920998937378389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921000011120113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460500005560106 + 460500005560107.

It is an arithmetic number, because the mean of its divisors is an integer number (460500005560107).

Almost surely, 2^{921000011120213} is an apocalyptic number.

It is an amenable number.

921000011120213 is a deficient number, since it is larger than the sum of its proper divisors (1).

921000011120213 is an equidigital number, since it uses as much as digits as its factorization.

921000011120213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 921000011120213 in words is "nine hundred twenty-one trillion, eleven million, one hundred twenty thousand, two hundred thirteen".