11123122142 has 16 divisors (see below), whose sum is σ = 18645412464. Its totient is φ = 4932648000.

The previous prime is 11123122141. The next prime is 11123122147. The reversal of 11123122142 is 24122132111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123122141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6164909 + ... + 6166712.

It is an arithmetic number, because the mean of its divisors is an integer number (1165338279).

Almost surely, 2^11123122142 is an apocalyptic number.

11123122142 is a deficient number, since it is larger than the sum of its proper divisors (7522290322).

11123122142 is a wasteful number, since it uses less digits than its factorization.

11123122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12331675.

The product of its digits is 192, while the sum is 20.

Adding to 11123122142 its reverse (24122132111), we get a palindrome (35245254253).

The spelling of 11123122142 in words is "eleven billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred forty-two".