11123215141 has 4 divisors (see below), whose sum is σ = 11777521932. Its totient is φ = 10468908352.

The previous prime is 11123215139. The next prime is 11123215157. The reversal of 11123215141 is 14151232111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9759464100 + 1363751041 = 98790^2 + 36929^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123215141 - 2¹ = 11123215139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123215241) 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, 327153370 + ... + 327153403.

It is an arithmetic number, because the mean of its divisors is an integer number (2944380483).

Almost surely, 2^11123215141 is an apocalyptic number.

It is an amenable number.

11123215141 is a deficient number, since it is larger than the sum of its proper divisors (654306791).

11123215141 is an equidigital number, since it uses as much as digits as its factorization.

11123215141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654306790.

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

Adding to 11123215141 its reverse (14151232111), we get a palindrome (25274447252).

The spelling of 11123215141 in words is "eleven billion, one hundred twenty-three million, two hundred fifteen thousand, one hundred forty-one".