1922010210121 has 2 divisors, whose sum is σ = 1922010210122. Its totient is φ = 1922010210120.

The previous prime is 1922010210119. The next prime is 1922010210143. The reversal of 1922010210121 is 1210120102291.

It is an a-pointer prime, because the next prime (1922010210143) can be obtained adding 1922010210121 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1916463684496 + 5546525625 = 1384364^2 + 74475^2 .

It is an emirp because it is prime and its reverse (1210120102291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1922010210121 - 2¹ = 1922010210119 is a prime.

Together with 1922010210119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1922010210092 and 1922010210101.

It is not a weakly prime, because it can be changed into another prime (1922010210221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961005105060 + 961005105061.

It is an arithmetic number, because the mean of its divisors is an integer number (961005105061).

Almost surely, 2^{1922010210121} is an apocalyptic number.

It is an amenable number.

1922010210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922010210121 is an equidigital number, since it uses as much as digits as its factorization.

1922010210121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 1922010210121 in words is "one trillion, nine hundred twenty-two billion, ten million, two hundred ten thousand, one hundred twenty-one".