1130121211 has 4 divisors (see below), whose sum is σ = 1130245192. Its totient is φ = 1129997232.

The previous prime is 1130121203. The next prime is 1130121233. The reversal of 1130121211 is 1121210311.

It is a happy number.

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 1130121211 - 2³ = 1130121203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1130121191 and 1130121200.

It is not an unprimeable number, because it can be changed into a prime (1130121281) 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, 47130 + ... + 66943.

It is an arithmetic number, because the mean of its divisors is an integer number (282561298).

Almost surely, 2^1130121211 is an apocalyptic number.

1130121211 is a deficient number, since it is larger than the sum of its proper divisors (123981).

1130121211 is an equidigital number, since it uses as much as digits as its factorization.

1130121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123980.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1130121211 is about 33617.2754844886. The cubic root of 1130121211 is about 1041.6176781598.

Adding to 1130121211 its reverse (1121210311), we get a palindrome (2251331522).

The spelling of 1130121211 in words is "one billion, one hundred thirty million, one hundred twenty-one thousand, two hundred eleven".