1155700221 has 8 divisors (see below), whose sum is σ = 1659467040. Its totient is φ = 711200112.

The previous prime is 1155700177. The next prime is 1155700253. The reversal of 1155700221 is 1220075511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1155700221 - 2¹⁰ = 1155699197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1155700191 and 1155700200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155700421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14816631 + ... + 14816708.

It is an arithmetic number, because the mean of its divisors is an integer number (207433380).

Almost surely, 2^1155700221 is an apocalyptic number.

It is an amenable number.

1155700221 is a deficient number, since it is larger than the sum of its proper divisors (503766819).

1155700221 is a wasteful number, since it uses less digits than its factorization.

1155700221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29633355.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 1155700221 is about 33995.5911994482. The cubic root of 1155700221 is about 1049.4177334056.

Adding to 1155700221 its reverse (1220075511), we get a palindrome (2375775732).

The spelling of 1155700221 in words is "one billion, one hundred fifty-five million, seven hundred thousand, two hundred twenty-one".