1121231629 has 16 divisors (see below), whose sum is σ = 1350321280. Its totient is φ = 909480960.

The previous prime is 1121231627. The next prime is 1121231641. The reversal of 1121231629 is 9261321211.

It is a cyclic number.

It is not a de Polignac number, because 1121231629 - 2¹ = 1121231627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121231597 and 1121231606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121231627) 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 15 ways as a sum of consecutive naturals, for example, 133309 + ... + 141469.

It is an arithmetic number, because the mean of its divisors is an integer number (84395080).

Almost surely, 2^1121231629 is an apocalyptic number.

1121231629 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1121231629 is a deficient number, since it is larger than the sum of its proper divisors (229089651).

1121231629 is a wasteful number, since it uses less digits than its factorization.

1121231629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9220.

The product of its digits is 1296, while the sum is 28.

The square root of 1121231629 is about 33484.7969831086. The cubic root of 1121231629 is about 1038.8793491523.

The spelling of 1121231629 in words is "one billion, one hundred twenty-one million, two hundred thirty-one thousand, six hundred twenty-nine".