21222223355192 has 8 divisors (see below), whose sum is σ = 39791668791000. Its totient is φ = 10611111677592.

The previous prime is 21222223355129. The next prime is 21222223355243. The reversal of 21222223355192 is 29155332222212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1326388959692 + ... + 1326388959707.

It is an arithmetic number, because the mean of its divisors is an integer number (4973958598875).

Almost surely, 2^{21222223355192} is an apocalyptic number.

It is an amenable number.

21222223355192 is a deficient number, since it is larger than the sum of its proper divisors (18569445435808).

21222223355192 is a wasteful number, since it uses less digits than its factorization.

21222223355192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652777919405 (or 2652777919401 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The spelling of 21222223355192 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twenty-three million, three hundred fifty-five thousand, one hundred ninety-two".