1121232013 has 24 divisors (see below), whose sum is σ = 1260727776. Its totient is φ = 988852800.

The previous prime is 1121232011. The next prime is 1121232023. The reversal of 1121232013 is 3102321211.

It is not a de Polignac number, because 1121232013 - 2¹ = 1121232011 is a prime.

It is a super-2 number, since 2×1121232013² = 2514322453952064338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121232011) 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 23 ways as a sum of consecutive naturals, for example, 4047631 + ... + 4047907.

It is an arithmetic number, because the mean of its divisors is an integer number (52530324).

Almost surely, 2^1121232013 is an apocalyptic number.

It is an amenable number.

1121232013 is a deficient number, since it is larger than the sum of its proper divisors (139495763).

1121232013 is a wasteful number, since it uses less digits than its factorization.

1121232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1121232013 is about 33484.8027170536. The cubic root of 1121232013 is about 1038.8794677509.

Adding to 1121232013 its reverse (3102321211), we get a palindrome (4223553224).

The spelling of 1121232013 in words is "one billion, one hundred twenty-one million, two hundred thirty-two thousand, thirteen".