222128161919999 has 4 divisors (see below), whose sum is σ = 222332511656064. Its totient is φ = 221923812183936.

The previous prime is 222128161919957. The next prime is 222128161920031. The reversal of 222128161919999 is 999919161821222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222128161919999 - 2¹² = 222128161915903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222128161919929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102174866402 + ... + 102174868575.

It is an arithmetic number, because the mean of its divisors is an integer number (55583127914016).

Almost surely, 2^{222128161919999} is an apocalyptic number.

222128161919999 is a deficient number, since it is larger than the sum of its proper divisors (204349736065).

222128161919999 is a wasteful number, since it uses less digits than its factorization.

222128161919999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204349736064.

The product of its digits is 45349632, while the sum is 71.

The spelling of 222128161919999 in words is "two hundred twenty-two trillion, one hundred twenty-eight billion, one hundred sixty-one million, nine hundred nineteen thousand, nine hundred ninety-nine".