11131121023 has 8 divisors (see below), whose sum is σ = 12174261840. Its totient is φ = 10093183680.

The previous prime is 11131121021. The next prime is 11131121129. The reversal of 11131121023 is 32012113111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11131121023 - 2¹ = 11131121021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11131120988 and 11131121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131121021) 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, 1296390 + ... + 1304947.

It is an arithmetic number, because the mean of its divisors is an integer number (1521782730).

Almost surely, 2^11131121023 is an apocalyptic number.

11131121023 is a deficient number, since it is larger than the sum of its proper divisors (1043140817).

11131121023 is a wasteful number, since it uses less digits than its factorization.

11131121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601737.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11131121023 its reverse (32012113111), we get a palindrome (43143234134).

The spelling of 11131121023 in words is "eleven billion, one hundred thirty-one million, one hundred twenty-one thousand, twenty-three".