11154132121 has 8 divisors (see below), whose sum is σ = 12180434688. Its totient is φ = 10129878000.

The previous prime is 11154132107. The next prime is 11154132137. The reversal of 11154132121 is 12123145111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11154132121 - 2⁷ = 11154131993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11154132092 and 11154132101.

It is not an unprimeable number, because it can be changed into a prime (11154132181) 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, 500710 + ... + 522511.

It is an arithmetic number, because the mean of its divisors is an integer number (1522554336).

Almost surely, 2^11154132121 is an apocalyptic number.

11154132121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11154132121 is a deficient number, since it is larger than the sum of its proper divisors (1026302567).

11154132121 is a wasteful number, since it uses less digits than its factorization.

11154132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024223.

The product of its digits is 240, while the sum is 22.

Adding to 11154132121 its reverse (12123145111), we get a palindrome (23277277232).

The spelling of 11154132121 in words is "eleven billion, one hundred fifty-four million, one hundred thirty-two thousand, one hundred twenty-one".