1181220002 has 16 divisors (see below), whose sum is σ = 1803297600. Its totient is φ = 580136880.

The previous prime is 1181219927. The next prime is 1181220013. The reversal of 1181220002 is 2000221811.

It is a happy number.

It is an unprimeable number.

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, 180752 + ... + 187172.

It is an arithmetic number, because the mean of its divisors is an integer number (112706100).

Almost surely, 2^1181220002 is an apocalyptic number.

1181220002 is a deficient number, since it is larger than the sum of its proper divisors (622077598).

1181220002 is a wasteful number, since it uses less digits than its factorization.

1181220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1181220002 is about 34368.8813027134. The cubic root of 1181220002 is about 1057.0858613798.

Adding to 1181220002 its reverse (2000221811), we get a palindrome (3181441813).

The spelling of 1181220002 in words is "one billion, one hundred eighty-one million, two hundred twenty thousand, two".