1123211144678 has 48 divisors (see below), whose sum is σ = 2042270975520. Its totient is φ = 461384332416.

The previous prime is 1123211144677. The next prime is 1123211144683. The reversal of 1123211144678 is 8764411123211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123211144677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1053050 + ... + 1831757.

It is an arithmetic number, because the mean of its divisors is an integer number (42547311990).

Almost surely, 2^{1123211144678} is an apocalyptic number.

1123211144678 is a deficient number, since it is larger than the sum of its proper divisors (919059830842).

1123211144678 is a wasteful number, since it uses less digits than its factorization.

1123211144678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884989 (or 2884982 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

Adding to 1123211144678 its reverse (8764411123211), we get a palindrome (9887622267889).

The spelling of 1123211144678 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, one hundred forty-four thousand, six hundred seventy-eight".