1121452311 has 32 divisors (see below), whose sum is σ = 1867788288. Its totient is φ = 583672320.

The previous prime is 1121452309. The next prime is 1121452327. The reversal of 1121452311 is 1132541211.

It is not a de Polignac number, because 1121452311 - 2¹ = 1121452309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121452511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39600 + ... + 61733.

It is an arithmetic number, because the mean of its divisors is an integer number (58368384).

Almost surely, 2^1121452311 is an apocalyptic number.

1121452311 is a deficient number, since it is larger than the sum of its proper divisors (746335977).

1121452311 is a wasteful number, since it uses less digits than its factorization.

1121452311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101391.

The product of its digits is 240, while the sum is 21.

The square root of 1121452311 is about 33488.0920776326. The cubic root of 1121452311 is about 1038.9475024601.

Adding to 1121452311 its reverse (1132541211), we get a palindrome (2253993522).

Subtracting 1121452311 from its reverse (1132541211), we obtain a square (11088900 = 3330²).

The spelling of 1121452311 in words is "one billion, one hundred twenty-one million, four hundred fifty-two thousand, three hundred eleven".