20120401321 has 2 divisors, whose sum is σ = 20120401322. Its totient is φ = 20120401320.

The previous prime is 20120401307. The next prime is 20120401331. The reversal of 20120401321 is 12310402102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11850499600 + 8269901721 = 108860^2 + 90939^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120401321 - 2¹⁹ = 20119877033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20120401295 and 20120401304.

It is not a weakly prime, because it can be changed into another prime (20120401331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060200660 + 10060200661.

It is an arithmetic number, because the mean of its divisors is an integer number (10060200661).

Almost surely, 2^20120401321 is an apocalyptic number.

It is an amenable number.

20120401321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120401321 is an equidigital number, since it uses as much as digits as its factorization.

20120401321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20120401321 its reverse (12310402102), we get a palindrome (32430803423).

The spelling of 20120401321 in words is "twenty billion, one hundred twenty million, four hundred one thousand, three hundred twenty-one".