1150501221 has 6 divisors (see below), whose sum is σ = 1661835110. Its totient is φ = 767000808.

The previous prime is 1150501211. The next prime is 1150501259. The reversal of 1150501221 is 1221050511.

It can be written as a sum of positive squares in only one way, i.e., 1017929025 + 132572196 = 31905^2 + 11514^2 .

It is not a de Polignac number, because 1150501221 - 2⁹ = 1150500709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1150501194 and 1150501203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150501211) 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, 63916726 + ... + 63916743.

Almost surely, 2^1150501221 is an apocalyptic number.

It is an amenable number.

1150501221 is a deficient number, since it is larger than the sum of its proper divisors (511333889).

1150501221 is a wasteful number, since it uses less digits than its factorization.

1150501221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127833475 (or 127833472 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1150501221 is about 33919.0392110390. The cubic root of 1150501221 is about 1047.8417409204.

Adding to 1150501221 its reverse (1221050511), we get a palindrome (2371551732).

The spelling of 1150501221 in words is "one billion, one hundred fifty million, five hundred one thousand, two hundred twenty-one".