1151221041 has 6 divisors (see below), whose sum is σ = 1662874850. Its totient is φ = 767480688.

The previous prime is 1151221037. The next prime is 1151221063. The reversal of 1151221041 is 1401221511.

It can be written as a sum of positive squares in only one way, i.e., 1135420416 + 15800625 = 33696^2 + 3975^2 .

It is not a de Polignac number, because 1151221041 - 2² = 1151221037 is a prime.

It is a super-2 number, since 2×1151221041² = 2650619770482247362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151221021) 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, 63956716 + ... + 63956733.

Almost surely, 2^1151221041 is an apocalyptic number.

It is an amenable number.

1151221041 is a deficient number, since it is larger than the sum of its proper divisors (511653809).

1151221041 is a wasteful number, since it uses less digits than its factorization.

1151221041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127913455 (or 127913452 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1151221041 is about 33929.6484066664. The cubic root of 1151221041 is about 1048.0602254616.

Adding to 1151221041 its reverse (1401221511), we get a palindrome (2552442552).

The spelling of 1151221041 in words is "one billion, one hundred fifty-one million, two hundred twenty-one thousand, forty-one".