11101121542 has 16 divisors (see below), whose sum is σ = 19494653472. Its totient is φ = 4641583680.

The previous prime is 11101121491. The next prime is 11101121569. The reversal of 11101121542 is 24512110111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9669393 + ... + 9670540.

It is an arithmetic number, because the mean of its divisors is an integer number (1218415842).

Almost surely, 2^11101121542 is an apocalyptic number.

11101121542 is a deficient number, since it is larger than the sum of its proper divisors (8393531930).

11101121542 is a wasteful number, since it uses less digits than its factorization.

11101121542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19339983.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 11101121542 its reverse (24512110111), we get a palindrome (35613231653).

The spelling of 11101121542 in words is "eleven billion, one hundred one million, one hundred twenty-one thousand, five hundred forty-two".