1129095121 has 32 divisors (see below), whose sum is σ = 1485388800. Its totient is φ = 831487680.

The previous prime is 1129095109. The next prime is 1129095133. The reversal of 1129095121 is 1215909211.

It is an interprime number because it is at equal distance from previous prime (1129095109) and next prime (1129095133).

It is a cyclic number.

It is not a de Polignac number, because 1129095121 - 2⁵ = 1129095089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1129095181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 896190 + ... + 897448.

It is an arithmetic number, because the mean of its divisors is an integer number (46418400).

Almost surely, 2^1129095121 is an apocalyptic number.

1129095121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1129095121 is a deficient number, since it is larger than the sum of its proper divisors (356293679).

1129095121 is a wasteful number, since it uses less digits than its factorization.

1129095121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909.

The product of its (nonzero) digits is 1620, while the sum is 31.

The square root of 1129095121 is about 33602.0106690061. The cubic root of 1129095121 is about 1041.3023382047.

The spelling of 1129095121 in words is "one billion, one hundred twenty-nine million, ninety-five thousand, one hundred twenty-one".