1130121091 has 4 divisors (see below), whose sum is σ = 1232859384. Its totient is φ = 1027382800.

The previous prime is 1130121079. The next prime is 1130121107. The reversal of 1130121091 is 1901210311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1130121091 - 2⁷ = 1130120963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1130121071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51369130 + ... + 51369151.

It is an arithmetic number, because the mean of its divisors is an integer number (308214846).

Almost surely, 2^1130121091 is an apocalyptic number.

1130121091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1130121091 is a deficient number, since it is larger than the sum of its proper divisors (102738293).

1130121091 is a wasteful number, since it uses less digits than its factorization.

1130121091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102738292.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 1130121091 is about 33617.2736996919. The cubic root of 1130121091 is about 1041.6176412923.

It can be divided in two parts, 1130 and 121091, that added together give a palindrome (122221).

The spelling of 1130121091 in words is "one billion, one hundred thirty million, one hundred twenty-one thousand, ninety-one".