11132121023 has 4 divisors (see below), whose sum is σ = 11200416408. Its totient is φ = 11063825640.

The previous prime is 11132121019. The next prime is 11132121037. The reversal of 11132121023 is 32012123111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11132121023 - 2² = 11132121019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11132120992 and 11132121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11132121043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34147448 + ... + 34147773.

It is an arithmetic number, because the mean of its divisors is an integer number (2800104102).

Almost surely, 2^11132121023 is an apocalyptic number.

11132121023 is a deficient number, since it is larger than the sum of its proper divisors (68295385).

11132121023 is an equidigital number, since it uses as much as digits as its factorization.

11132121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68295384.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11132121023 its reverse (32012123111), we get a palindrome (43144244134).

The spelling of 11132121023 in words is "eleven billion, one hundred thirty-two million, one hundred twenty-one thousand, twenty-three".