1922213 has 2 divisors, whose sum is σ = 1922214. Its totient is φ = 1922212.

The previous prime is 1922209. The next prime is 1922233. The reversal of 1922213 is 3122291.

It is an a-pointer prime, because the next prime (1922233) can be obtained adding 1922213 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1151329 + 770884 = 1073^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1922213 - 2² = 1922209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1922233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961106 + 961107.

It is an arithmetic number, because the mean of its divisors is an integer number (961107).

2^1922213 is an apocalyptic number.

It is an amenable number.

1922213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922213 is an equidigital number, since it uses as much as digits as its factorization.

1922213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 1922213 is about 1386.4389636764. The cubic root of 1922213 is about 124.3370340252.

The spelling of 1922213 in words is "one million, nine hundred twenty-two thousand, two hundred thirteen".