1170513221 has 16 divisors (see below), whose sum is σ = 1275855360. Its totient is φ = 1069770240.

The previous prime is 1170513199. The next prime is 1170513251. The reversal of 1170513221 is 1223150711.

It is a cyclic number.

It is not a de Polignac number, because 1170513221 - 2¹⁰ = 1170512197 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 (1170513251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195545 + ... + 201441.

It is an arithmetic number, because the mean of its divisors is an integer number (79740960).

Almost surely, 2^1170513221 is an apocalyptic number.

It is an amenable number.

1170513221 is a deficient number, since it is larger than the sum of its proper divisors (105342139).

1170513221 is a wasteful number, since it uses less digits than its factorization.

1170513221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6284.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1170513221 is about 34212.7640070194. The cubic root of 1170513221 is about 1053.8822932885.

Adding to 1170513221 its reverse (1223150711), we get a palindrome (2393663932).

The spelling of 1170513221 in words is "one billion, one hundred seventy million, five hundred thirteen thousand, two hundred twenty-one".