1171220006 has 16 divisors (see below), whose sum is σ = 1917146448. Its totient is φ = 532204800.

The previous prime is 1171220003. The next prime is 1171220009. The reversal of 1171220006 is 6000221711.

It is an interprime number because it is at equal distance from previous prime (1171220003) and next prime (1171220009).

It is a self number, because there is not a number n which added to its sum of digits gives 1171220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171220003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87026 + ... + 99578.

It is an arithmetic number, because the mean of its divisors is an integer number (119821653).

Almost surely, 2^1171220006 is an apocalyptic number.

1171220006 is a deficient number, since it is larger than the sum of its proper divisors (745926442).

1171220006 is a wasteful number, since it uses less digits than its factorization.

1171220006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16807.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1171220006 is about 34223.0917072085. The cubic root of 1171220006 is about 1054.0943707232.

Adding to 1171220006 its reverse (6000221711), we get a palindrome (7171441717).

The spelling of 1171220006 in words is "one billion, one hundred seventy-one million, two hundred twenty thousand, six".