1171220027 has 8 divisors (see below), whose sum is σ = 1182321360. Its totient is φ = 1160131840.

The previous prime is 1171220009. The next prime is 1171220081. The reversal of 1171220027 is 7200221711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1171220027 - 2⁸ = 1171219771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1171219984 and 1171220011.

It is not an unprimeable number, because it can be changed into a prime (1171220087) 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, 333752 + ... + 337242.

It is an arithmetic number, because the mean of its divisors is an integer number (147790170).

Almost surely, 2^1171220027 is an apocalyptic number.

1171220027 is a deficient number, since it is larger than the sum of its proper divisors (11101333).

1171220027 is a wasteful number, since it uses less digits than its factorization.

1171220027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6573.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 1171220027 is about 34223.0920140188. The cubic root of 1171220027 is about 1054.0943770232.

Adding to 1171220027 its reverse (7200221711), we get a palindrome (8371441738).

The spelling of 1171220027 in words is "one billion, one hundred seventy-one million, two hundred twenty thousand, twenty-seven".