11222131001231 has 4 divisors (see below), whose sum is σ = 11812769475000. Its totient is φ = 10631492527464.

The previous prime is 11222131001203. The next prime is 11222131001239. The reversal of 11222131001231 is 13210013122211.

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 11222131001231 - 2¹⁴ = 11222130984847 is a prime.

It is a super-2 number, since 2×11222131001231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222131001239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295319236856 + ... + 295319236893.

It is an arithmetic number, because the mean of its divisors is an integer number (2953192368750).

Almost surely, 2^{11222131001231} is an apocalyptic number.

11222131001231 is a deficient number, since it is larger than the sum of its proper divisors (590638473769).

11222131001231 is an equidigital number, since it uses as much as digits as its factorization.

11222131001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590638473768.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 11222131001231 its reverse (13210013122211), we get a palindrome (24432144123442).

The spelling of 11222131001231 in words is "eleven trillion, two hundred twenty-two billion, one hundred thirty-one million, one thousand, two hundred thirty-one".