219797221063 has 16 divisors (see below), whose sum is σ = 253483166016. Its totient is φ = 186683696640.

The previous prime is 219797221057. The next prime is 219797221123. The reversal of 219797221063 is 360122797912.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-219797221063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219797220998 and 219797221016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219797221003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3337845 + ... + 3403057.

It is an arithmetic number, because the mean of its divisors is an integer number (15842697876).

Almost surely, 2^219797221063 is an apocalyptic number.

219797221063 is a deficient number, since it is larger than the sum of its proper divisors (33685944953).

219797221063 is a wasteful number, since it uses less digits than its factorization.

219797221063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69594.

The product of its (nonzero) digits is 571536, while the sum is 49.

The spelling of 219797221063 in words is "two hundred nineteen billion, seven hundred ninety-seven million, two hundred twenty-one thousand, sixty-three".