1131034221 has 6 divisors (see below), whose sum is σ = 1633716110. Its totient is φ = 754022808.

The previous prime is 1131034217. The next prime is 1131034253. The reversal of 1131034221 is 1224301311.

1131034221 is a `hidden beast` number, since 11 + 310 + 342 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1057160196 + 73874025 = 32514^2 + 8595^2 .

It is not a de Polignac number, because 1131034221 - 2² = 1131034217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1131034194 and 1131034203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131034321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62835226 + ... + 62835243.

Almost surely, 2^1131034221 is an apocalyptic number.

It is an amenable number.

1131034221 is a deficient number, since it is larger than the sum of its proper divisors (502681889).

1131034221 is a wasteful number, since it uses less digits than its factorization.

1131034221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125670475 (or 125670472 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1131034221 is about 33630.8522193536. The cubic root of 1131034221 is about 1041.8981057104.

Adding to 1131034221 its reverse (1224301311), we get a palindrome (2355335532).

The spelling of 1131034221 in words is "one billion, one hundred thirty-one million, thirty-four thousand, two hundred twenty-one".