11121405142 has 16 divisors (see below), whose sum is σ = 17494905600. Its totient is φ = 5292200232.

The previous prime is 11121405133. The next prime is 11121405143. The reversal of 11121405142 is 24150412111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121405143) 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, 598308 + ... + 616615.

It is an arithmetic number, because the mean of its divisors is an integer number (1093431600).

Almost surely, 2^11121405142 is an apocalyptic number.

11121405142 is a deficient number, since it is larger than the sum of its proper divisors (6373500458).

11121405142 is a wasteful number, since it uses less digits than its factorization.

11121405142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215147.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 11121405142 its reverse (24150412111), we get a palindrome (35271817253).

The spelling of 11121405142 in words is "eleven billion, one hundred twenty-one million, four hundred five thousand, one hundred forty-two".