11101131421 has 16 divisors (see below), whose sum is σ = 11558688768. Its totient is φ = 10653048000.

The previous prime is 11101131407. The next prime is 11101131451. The reversal of 11101131421 is 12413110111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11101131421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101131395 and 11101131404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101131451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3017235 + ... + 3020911.

It is an arithmetic number, because the mean of its divisors is an integer number (722418048).

Almost surely, 2^11101131421 is an apocalyptic number.

It is an amenable number.

11101131421 is a deficient number, since it is larger than the sum of its proper divisors (457557347).

11101131421 is a wasteful number, since it uses less digits than its factorization.

11101131421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11101131421 its reverse (12413110111), we get a palindrome (23514241532).

The spelling of 11101131421 in words is "eleven billion, one hundred one million, one hundred thirty-one thousand, four hundred twenty-one".