219142219820 has 12 divisors (see below), whose sum is σ = 460198661664. Its totient is φ = 87656887920.

The previous prime is 219142219819. The next prime is 219142219861. The reversal of 219142219820 is 28912241912.

It is a super-3 number, since 3×219142219820³ (a number of 35 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 5478555476 + ... + 5478555515.

It is an arithmetic number, because the mean of its divisors is an integer number (38349888472).

Almost surely, 2^219142219820 is an apocalyptic number.

219142219820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219142219820 is an abundant number, since it is smaller than the sum of its proper divisors (241056441844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219142219820 is a wasteful number, since it uses less digits than its factorization.

219142219820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10957111000 (or 10957110998 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 219142219820 in words is "two hundred nineteen billion, one hundred forty-two million, two hundred nineteen thousand, eight hundred twenty".