1222234555678 has 32 divisors (see below), whose sum is σ = 1958818023360. Its totient is φ = 569950187520.

The previous prime is 1222234555651. The next prime is 1222234555691. The reversal of 1222234555678 is 8765554322221.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18135183 + ... + 18202453.

It is an arithmetic number, because the mean of its divisors is an integer number (61213063230).

Almost surely, 2^{1222234555678} is an apocalyptic number.

1222234555678 is a deficient number, since it is larger than the sum of its proper divisors (736583467682).

1222234555678 is a wasteful number, since it uses less digits than its factorization.

1222234555678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72132.

The product of its digits is 8064000, while the sum is 52.

Adding to 1222234555678 its reverse (8765554322221), we get a palindrome (9987788877899).

The spelling of 1222234555678 in words is "one trillion, two hundred twenty-two billion, two hundred thirty-four million, five hundred fifty-five thousand, six hundred seventy-eight".