221022219 has 64 divisors (see below), whose sum is σ = 358318080. Its totient is φ = 119616000.

The previous prime is 221022211. The next prime is 221022229. The reversal of 221022219 is 912220122.

It is a happy number.

It is not a de Polignac number, because 221022219 - 2³ = 221022211 is a prime.

It is a super-2 number, since 2×221022219² = 97701642583367922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221022195 and 221022204.

It is not an unprimeable number, because it can be changed into a prime (221022211) 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 in 63 ways as a sum of consecutive naturals, for example, 1234672 + ... + 1234850.

It is an arithmetic number, because the mean of its divisors is an integer number (5598720).

Almost surely, 2^221022219 is an apocalyptic number.

221022219 is a deficient number, since it is larger than the sum of its proper divisors (137295861).

221022219 is a wasteful number, since it uses less digits than its factorization.

221022219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 221022219 is about 14866.8160343767. The cubic root of 221022219 is about 604.6146205845.

The spelling of 221022219 in words is "two hundred twenty-one million, twenty-two thousand, two hundred nineteen".