21192419212 has 12 divisors (see below), whose sum is σ = 37092285720. Its totient is φ = 10594623296.

The previous prime is 21192419203. The next prime is 21192419221. The reversal of 21192419212 is 21291429112.

It is an interprime number because it is at equal distance from previous prime (21192419203) and next prime (21192419221).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366262 + ... + 420157.

It is an arithmetic number, because the mean of its divisors is an integer number (3091023810).

Almost surely, 2^21192419212 is an apocalyptic number.

It is an amenable number.

21192419212 is a deficient number, since it is larger than the sum of its proper divisors (15899866508).

21192419212 is a wasteful number, since it uses less digits than its factorization.

21192419212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793160 (or 793158 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The spelling of 21192419212 in words is "twenty-one billion, one hundred ninety-two million, four hundred nineteen thousand, two hundred twelve".