22219965 has 12 divisors (see below), whose sum is σ = 38514684. Its totient is φ = 11850624.

The previous prime is 22219961. The next prime is 22219973. The reversal of 22219965 is 56991222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13111641 + 9108324 = 3621^2 + 3018^2 .

It is not a de Polignac number, because 22219965 - 2² = 22219961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22219961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246844 + ... + 246933.

It is an arithmetic number, because the mean of its divisors is an integer number (3209557).

Almost surely, 2^22219965 is an apocalyptic number.

It is an amenable number.

22219965 is a deficient number, since it is larger than the sum of its proper divisors (16294719).

22219965 is a wasteful number, since it uses less digits than its factorization.

22219965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493788 (or 493785 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 22219965 is about 4713.8057872594. The cubic root of 22219965 is about 281.1347023702.

The spelling of 22219965 in words is "twenty-two million, two hundred nineteen thousand, nine hundred sixty-five".