11202012231 has 4 divisors (see below), whose sum is σ = 14936016312. Its totient is φ = 7468008152.

The previous prime is 11202012203. The next prime is 11202012233. The reversal of 11202012231 is 13221020211.

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 11202012231 - 2¹⁰ = 11202011207 is a prime.

It is a super-2 number, since 2×11202012231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11202012231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202012233) 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, 1867002036 + ... + 1867002041.

It is an arithmetic number, because the mean of its divisors is an integer number (3734004078).

Almost surely, 2^11202012231 is an apocalyptic number.

11202012231 is a deficient number, since it is larger than the sum of its proper divisors (3734004081).

11202012231 is an equidigital number, since it uses as much as digits as its factorization.

11202012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734004080.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11202012231 its reverse (13221020211), we get a palindrome (24423032442).

It can be divided in two parts, 112020 and 12231, that added together give a triangular number (124251 = T₄₉₈).

The spelling of 11202012231 in words is "eleven billion, two hundred two million, twelve thousand, two hundred thirty-one".