20120120001321 has 8 divisors (see below), whose sum is σ = 26838112679904. Its totient is φ = 13407770328480.

The previous prime is 20120120001281. The next prime is 20120120001353. The reversal of 20120120001321 is 12310002102102.

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

It is not a de Polignac number, because 20120120001321 - 2⁹ = 20120120000809 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20120120001321.

It is not an unprimeable number, because it can be changed into a prime (20120120001721) 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, 1410743115 + ... + 1410757376.

It is an arithmetic number, because the mean of its divisors is an integer number (3354764084988).

Almost surely, 2^{20120120001321} is an apocalyptic number.

It is an amenable number.

20120120001321 is a deficient number, since it is larger than the sum of its proper divisors (6717992678583).

20120120001321 is a wasteful number, since it uses less digits than its factorization.

20120120001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821502871.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20120120001321 its reverse (12310002102102), we get a palindrome (32430122103423).

The spelling of 20120120001321 in words is "twenty trillion, one hundred twenty billion, one hundred twenty million, one thousand, three hundred twenty-one".