1187325221 has 8 divisors (see below), whose sum is σ = 1230336000. Its totient is φ = 1144452400.

The previous prime is 1187325173. The next prime is 1187325241. The reversal of 1187325221 is 1225237811.

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

It is a cyclic number.

It is not a de Polignac number, because 1187325221 - 2¹⁰ = 1187324197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187325241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16805 + ... + 51546.

It is an arithmetic number, because the mean of its divisors is an integer number (153792000).

Almost surely, 2^1187325221 is an apocalyptic number.

It is an amenable number.

1187325221 is a deficient number, since it is larger than the sum of its proper divisors (43010779).

1187325221 is an equidigital number, since it uses as much as digits as its factorization.

1187325221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68979.

The product of its digits is 6720, while the sum is 32.

The square root of 1187325221 is about 34457.5858266362. The cubic root of 1187325221 is about 1058.9039403210.

The spelling of 1187325221 in words is "one billion, one hundred eighty-seven million, three hundred twenty-five thousand, two hundred twenty-one".