1133021121 has 16 divisors (see below), whose sum is σ = 1562186304. Its totient is φ = 730027584.

The previous prime is 1133021119. The next prime is 1133021159. The reversal of 1133021121 is 1211203311.

It is a happy number.

It is not a de Polignac number, because 1133021121 - 2¹ = 1133021119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1133021121.

It is not an unprimeable number, because it can be changed into a prime (1133021161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42526 + ... + 63831.

It is an arithmetic number, because the mean of its divisors is an integer number (97636644).

Almost surely, 2^1133021121 is an apocalyptic number.

It is an amenable number.

1133021121 is a deficient number, since it is larger than the sum of its proper divisors (429165183).

1133021121 is a wasteful number, since it uses less digits than its factorization.

1133021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106480.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1133021121 is about 33660.3790976869. The cubic root of 1133021121 is about 1042.5078533416.

Adding to 1133021121 its reverse (1211203311), we get a palindrome (2344224432).

The spelling of 1133021121 in words is "one billion, one hundred thirty-three million, twenty-one thousand, one hundred twenty-one".