17814021121 has 24 divisors (see below), whose sum is σ = 20328459840. Its totient is φ = 15560251200.

The previous prime is 17814021107. The next prime is 17814021143. The reversal of 17814021121 is 12112041871.

It is not a de Polignac number, because 17814021121 - 2⁷ = 17814020993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17814021121.

It is not an unprimeable number, because it can be changed into a prime (17814021101) 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, 3307851 + ... + 3313231.

It is an arithmetic number, because the mean of its divisors is an integer number (847019160).

Almost surely, 2^17814021121 is an apocalyptic number.

It is an amenable number.

17814021121 is a deficient number, since it is larger than the sum of its proper divisors (2514438719).

17814021121 is a wasteful number, since it uses less digits than its factorization.

17814021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6457 (or 6444 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

Adding to 17814021121 its reverse (12112041871), we get a palindrome (29926062992).

The spelling of 17814021121 in words is "seventeen billion, eight hundred fourteen million, twenty-one thousand, one hundred twenty-one".