22212019 has 2 divisors, whose sum is σ = 22212020. Its totient is φ = 22212018.

The previous prime is 22212017. The next prime is 22212049. The reversal of 22212019 is 91021222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22212019 - 2¹ = 22212017 is a prime.

It is a super-2 number, since 2×22212019² = 986747576112722, which contains 22 as substring.

Together with 22212017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22211987 and 22212005.

It is not a weakly prime, because it can be changed into another prime (22212017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106009 + 11106010.

It is an arithmetic number, because the mean of its divisors is an integer number (11106010).

Almost surely, 2^22212019 is an apocalyptic number.

22212019 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212019 is an equidigital number, since it uses as much as digits as its factorization.

22212019 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 19.

The square root of 22212019 is about 4712.9628685149. The cubic root of 22212019 is about 281.1011865255.

The spelling of 22212019 in words is "twenty-two million, two hundred twelve thousand, nineteen".