1121102231 has 4 divisors (see below), whose sum is σ = 1124278512. Its totient is φ = 1117925952.

The previous prime is 1121102189. The next prime is 1121102251. The reversal of 1121102231 is 1322011211.

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 1121102231 - 2¹⁰ = 1121101207 is a prime.

It is a super-2 number, since 2×1121102231² = 2513740424706354722, which 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 (1121102251) 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, 1587611 + ... + 1588316.

It is an arithmetic number, because the mean of its divisors is an integer number (281069628).

Almost surely, 2^1121102231 is an apocalyptic number.

1121102231 is a deficient number, since it is larger than the sum of its proper divisors (3176281).

1121102231 is an equidigital number, since it uses as much as digits as its factorization.

1121102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176280.

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

The square root of 1121102231 is about 33482.8647370562. The cubic root of 1121102231 is about 1038.8393829585.

Adding to 1121102231 its reverse (1322011211), we get a palindrome (2443113442).

The spelling of 1121102231 in words is "one billion, one hundred twenty-one million, one hundred two thousand, two hundred thirty-one".