11132112121 has 16 divisors (see below), whose sum is σ = 12488734720. Its totient is φ = 9853047360.

The previous prime is 11132112119. The next prime is 11132112127. The reversal of 11132112121 is 12121123111.

It is a happy number.

It is not a de Polignac number, because 11132112121 - 2¹ = 11132112119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11132112095 and 11132112104.

It is not an unprimeable number, because it can be changed into a prime (11132112127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82785 + ... + 170638.

It is an arithmetic number, because the mean of its divisors is an integer number (780545920).

Almost surely, 2^11132112121 is an apocalyptic number.

It is an amenable number.

11132112121 is a deficient number, since it is larger than the sum of its proper divisors (1356622599).

11132112121 is a wasteful number, since it uses less digits than its factorization.

11132112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253576.

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

Adding to 11132112121 its reverse (12121123111), we get a palindrome (23253235232).

The spelling of 11132112121 in words is "eleven billion, one hundred thirty-two million, one hundred twelve thousand, one hundred twenty-one".