1921122000011 has 2 divisors, whose sum is σ = 1921122000012. Its totient is φ = 1921122000010.

The previous prime is 1921121999981. The next prime is 1921122000067. The reversal of 1921122000011 is 1100002211291.

It is a weak prime.

It is an emirp because it is prime and its reverse (1100002211291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1921122000011 - 2⁶ = 1921121999947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1921122000911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960561000005 + 960561000006.

It is an arithmetic number, because the mean of its divisors is an integer number (960561000006).

Almost surely, 2^{1921122000011} is an apocalyptic number.

1921122000011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1921122000011 is an equidigital number, since it uses as much as digits as its factorization.

1921122000011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1921122000011 in words is "one trillion, nine hundred twenty-one billion, one hundred twenty-two million, eleven", and thus it is an aban number.