1151120228 has 6 divisors (see below), whose sum is σ = 2014460406. Its totient is φ = 575560112.

The previous prime is 1151120221. The next prime is 1151120239. The reversal of 1151120228 is 8220211511.

It can be written as a sum of positive squares in only one way, i.e., 1050278464 + 100841764 = 32408^2 + 10042^2 .

It is not an unprimeable number, because it can be changed into a prime (1151120221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143890025 + ... + 143890032.

It is an arithmetic number, because the mean of its divisors is an integer number (335743401).

Almost surely, 2^1151120228 is an apocalyptic number.

It is an amenable number.

1151120228 is a deficient number, since it is larger than the sum of its proper divisors (863340178).

1151120228 is a wasteful number, since it uses less digits than its factorization.

1151120228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287780061 (or 287780059 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 1151120228 is about 33928.1627560350. The cubic root of 1151120228 is about 1048.0296315165.

Adding to 1151120228 its reverse (8220211511), we get a palindrome (9371331739).

The spelling of 1151120228 in words is "one billion, one hundred fifty-one million, one hundred twenty thousand, two hundred twenty-eight".