1121212011 has 16 divisors (see below), whose sum is σ = 1507099520. Its totient is φ = 741424320.

The previous prime is 1121211991. The next prime is 1121212013. The reversal of 1121212011 is 1102121211.

It is not a de Polignac number, because 1121212011 - 2¹¹ = 1121209963 is a prime.

It is a super-2 number, since 2×1121212011² = 2514232747221328242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121212013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195300 + ... + 200958.

It is an arithmetic number, because the mean of its divisors is an integer number (94193720).

Almost surely, 2^1121212011 is an apocalyptic number.

1121212011 is a deficient number, since it is larger than the sum of its proper divisors (385887509).

1121212011 is a wasteful number, since it uses less digits than its factorization.

1121212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1121212011 is about 33484.5040429151. The cubic root of 1121212011 is about 1038.8732900849.

Adding to 1121212011 its reverse (1102121211), we get a palindrome (2223333222).

The spelling of 1121212011 in words is "one billion, one hundred twenty-one million, two hundred twelve thousand, eleven".