221323210019 has 8 divisors (see below), whose sum is σ = 237367495440. Its totient is φ = 205718494176.

The previous prime is 221323209953. The next prime is 221323210021. The reversal of 221323210019 is 910012323122.

221323210019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221323210019 is a prime.

It is a super-2 number, since 2×221323210019² (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 221323210019.

It is not an unprimeable number, because it can be changed into a prime (221323213019) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 109891352 + ... + 109893365.

It is an arithmetic number, because the mean of its divisors is an integer number (29670936930).

Almost surely, 2^221323210019 is an apocalyptic number.

221323210019 is a deficient number, since it is larger than the sum of its proper divisors (16044285421).

221323210019 is a wasteful number, since it uses less digits than its factorization.

221323210019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219784789.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 221323210019 in words is "two hundred twenty-one billion, three hundred twenty-three million, two hundred ten thousand, nineteen".