1171204001 has 24 divisors (see below), whose sum is σ = 1376637120. Its totient is φ = 987795200.

The previous prime is 1171203997. The next prime is 1171204009. The reversal of 1171204001 is 1004021711.

It is not a de Polignac number, because 1171204001 - 2² = 1171203997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171204009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223115 + ... + 228303.

It is an arithmetic number, because the mean of its divisors is an integer number (57359880).

Almost surely, 2^1171204001 is an apocalyptic number.

1171204001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1171204001 is a deficient number, since it is larger than the sum of its proper divisors (205433119).

1171204001 is a wasteful number, since it uses less digits than its factorization.

1171204001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305 (or 5288 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 1171204001 is about 34222.8578730649. The cubic root of 1171204001 is about 1054.0895692179.

Adding to 1171204001 its reverse (1004021711), we get a palindrome (2175225712).

It can be divided in two parts, 117120 and 4001, that added together give a palindrome (121121).

The spelling of 1171204001 in words is "one billion, one hundred seventy-one million, two hundred four thousand, one".