1129001121 has 24 divisors (see below), whose sum is σ = 1708538624. Its totient is φ = 717504480.

The previous prime is 1129001119. The next prime is 1129001141. The reversal of 1129001121 is 1211009211.

It is a happy number.

It is not a de Polignac number, because 1129001121 - 2¹ = 1129001119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1129001094 and 1129001103.

It is not an unprimeable number, because it can be changed into a prime (1129001101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11506 + ... + 48891.

Almost surely, 2^1129001121 is an apocalyptic number.

It is an amenable number.

1129001121 is a deficient number, since it is larger than the sum of its proper divisors (579537503).

1129001121 is a wasteful number, since it uses less digits than its factorization.

1129001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60501 (or 60498 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The square root of 1129001121 is about 33600.6119140709. The cubic root of 1129001121 is about 1041.2734403925.

The spelling of 1129001121 in words is "one billion, one hundred twenty-nine million, one thousand, one hundred twenty-one".