22051219 has 2 divisors, whose sum is σ = 22051220. Its totient is φ = 22051218.

The previous prime is 22051213. The next prime is 22051231. The reversal of 22051219 is 91215022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22051219 - 2¹³ = 22043027 is a prime.

It is a super-2 number, since 2×22051219² = 972512518771922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22051219.

It is not a weakly prime, because it can be changed into another prime (22051213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11025609 + 11025610.

It is an arithmetic number, because the mean of its divisors is an integer number (11025610).

Almost surely, 2^22051219 is an apocalyptic number.

22051219 is a deficient number, since it is larger than the sum of its proper divisors (1).

22051219 is an equidigital number, since it uses as much as digits as its factorization.

22051219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 22051219 is about 4695.8725493778. The cubic root of 22051219 is about 280.4212155202.

The spelling of 22051219 in words is "twenty-two million, fifty-one thousand, two hundred nineteen".