22012019 has 2 divisors, whose sum is σ = 22012020. Its totient is φ = 22012018.

The previous prime is 22011967. The next prime is 22012031. The reversal of 22012019 is 91021022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012019 is a prime.

It is a super-2 number, since 2×22012019² = 969057960912722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22011988 and 22012006.

It is not a weakly prime, because it can be changed into another prime (22012069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006009 + 11006010.

It is an arithmetic number, because the mean of its divisors is an integer number (11006010).

Almost surely, 2^22012019 is an apocalyptic number.

22012019 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012019 is an equidigital number, since it uses as much as digits as its factorization.

22012019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 22012019 is about 4691.6968145864. The cubic root of 22012019 is about 280.2549506105.

The spelling of 22012019 in words is "twenty-two million, twelve thousand, nineteen".