222978504917 has 12 divisors (see below), whose sum is σ = 261123993900. Its totient is φ = 189841712256.

The previous prime is 222978504883. The next prime is 222978504941. The reversal of 222978504917 is 719405879222.

It can be written as a sum of positive squares in 2 ways, for example, as 35702480401 + 187276024516 = 188951^2 + 432754^2 .

It is not a de Polignac number, because 222978504917 - 2¹⁴ = 222978488533 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222978504017) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 15263108 + ... + 15277709.

It is an arithmetic number, because the mean of its divisors is an integer number (21760332825).

Almost surely, 2^222978504917 is an apocalyptic number.

It is an amenable number.

222978504917 is a deficient number, since it is larger than the sum of its proper divisors (38145488983).

222978504917 is a wasteful number, since it uses less digits than its factorization.

222978504917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30540980 (or 30540973 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 222978504917 in words is "two hundred twenty-two billion, nine hundred seventy-eight million, five hundred four thousand, nine hundred seventeen".