1122011231 has 16 divisors (see below), whose sum is σ = 1286592768. Its totient is φ = 968510400.

The previous prime is 1122011129. The next prime is 1122011243. The reversal of 1122011231 is 1321102211.

It is not a de Polignac number, because 1122011231 - 2²⁶ = 1054902367 is a prime.

It is a super-2 number, since 2×1122011231² = 2517818404980270722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122011291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18476 + ... + 50846.

It is an arithmetic number, because the mean of its divisors is an integer number (80412048).

Almost surely, 2^1122011231 is an apocalyptic number.

1122011231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1122011231 is a deficient number, since it is larger than the sum of its proper divisors (164581537).

1122011231 is a wasteful number, since it uses less digits than its factorization.

1122011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32542.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1122011231 is about 33496.4360940086. The cubic root of 1122011231 is about 1039.1200739520.

Adding to 1122011231 its reverse (1321102211), we get a palindrome (2443113442).

The spelling of 1122011231 in words is "one billion, one hundred twenty-two million, eleven thousand, two hundred thirty-one".