1217181060 has 96 divisors (see below), whose sum is σ = 3797566080. Its totient is φ = 323657856.

The previous prime is 1217181047. The next prime is 1217181067. The reversal of 1217181060 is 601817121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1217181067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 198399 + ... + 204441.

It is an arithmetic number, because the mean of its divisors is an integer number (39557980).

Almost surely, 2^1217181060 is an apocalyptic number.

1217181060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217181060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898783040).

1217181060 is an abundant number, since it is smaller than the sum of its proper divisors (2580385020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217181060 is a wasteful number, since it uses less digits than its factorization.

1217181060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6434 (or 6426 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 1217181060 is about 34888.1220474820. The cubic root of 1217181060 is about 1067.7061115362.

Adding to 1217181060 its reverse (601817121), we get a palindrome (1818998181).

The spelling of 1217181060 in words is "one billion, two hundred seventeen million, one hundred eighty-one thousand, sixty".