22219147 has 2 divisors, whose sum is σ = 22219148. Its totient is φ = 22219146.

The previous prime is 22219139. The next prime is 22219193. The reversal of 22219147 is 74191222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22219147 - 2³ = 22219139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22219247) 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, 11109573 + 11109574.

It is an arithmetic number, because the mean of its divisors is an integer number (11109574).

Almost surely, 2^22219147 is an apocalyptic number.

22219147 is a deficient number, since it is larger than the sum of its proper divisors (1).

22219147 is an equidigital number, since it uses as much as digits as its factorization.

22219147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 22219147 is about 4713.7190200520. The cubic root of 22219147 is about 281.1312524546.

It can be divided in two parts, 22219 and 147, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 22219147 in words is "twenty-two million, two hundred nineteen thousand, one hundred forty-seven".