19213211228 has 24 divisors (see below), whose sum is σ = 34470923760. Its totient is φ = 9364753280.

The previous prime is 19213211209. The next prime is 19213211233. The reversal of 19213211228 is 82211231291.

It is a junction number, because it is equal to n+sod(n) for n = 19213211194 and 19213211203.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 159950 + ... + 253002.

It is an arithmetic number, because the mean of its divisors is an integer number (1436288490).

Almost surely, 2^19213211228 is an apocalyptic number.

It is an amenable number.

19213211228 is a deficient number, since it is larger than the sum of its proper divisors (15257712532).

19213211228 is a wasteful number, since it uses less digits than its factorization.

19213211228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94357 (or 94355 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The spelling of 19213211228 in words is "nineteen billion, two hundred thirteen million, two hundred eleven thousand, two hundred twenty-eight".