219345813122 has 30 divisors (see below), whose sum is σ = 338303047965. Its totient is φ = 106662911520.

The previous prime is 219345813119. The next prime is 219345813143. The reversal of 219345813122 is 221318543912.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 219137270641 + 208542481 = 468121^2 + 14441^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=331169.

It is a super-2 number, since 2×219345813122² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 219345813122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2464559654 + ... + 2464559742.

Almost surely, 2^219345813122 is an apocalyptic number.

219345813122 is a deficient number, since it is larger than the sum of its proper divisors (118957234843).

219345813122 is an frugal number, since it uses more digits than its factorization.

219345813122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 152 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The spelling of 219345813122 in words is "two hundred nineteen billion, three hundred forty-five million, eight hundred thirteen thousand, one hundred twenty-two".