1331221184 has 14 divisors (see below), whose sum is σ = 2641642164. Its totient is φ = 665610560.

The previous prime is 1331221121. The next prime is 1331221231. The reversal of 1331221184 is 4811221331.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10400102 + ... + 10400229.

It is an arithmetic number, because the mean of its divisors is an integer number (188688726).

Almost surely, 2^1331221184 is an apocalyptic number.

It is an amenable number.

1331221184 is a deficient number, since it is larger than the sum of its proper divisors (1310420980).

1331221184 is an equidigital number, since it uses as much as digits as its factorization.

1331221184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20800343 (or 20800333 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 1331221184 is about 36485.9039082219. The cubic root of 1331221184 is about 1100.0609288565.

The spelling of 1331221184 in words is "one billion, three hundred thirty-one million, two hundred twenty-one thousand, one hundred eighty-four".