20120321122201 has 4 divisors (see below), whose sum is σ = 20138237704912. Its totient is φ = 20102404539492.

The previous prime is 20120321122193. The next prime is 20120321122217. The reversal of 20120321122201 is 10222112302102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20120321122201 - 2³ = 20120321122193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120321126201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8958289671 + ... + 8958291916.

It is an arithmetic number, because the mean of its divisors is an integer number (5034559426228).

Almost surely, 2^{20120321122201} is an apocalyptic number.

It is an amenable number.

20120321122201 is a deficient number, since it is larger than the sum of its proper divisors (17916582711).

20120321122201 is a wasteful number, since it uses less digits than its factorization.

20120321122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17916582710.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20120321122201 its reverse (10222112302102), we get a palindrome (30342433424303).

The spelling of 20120321122201 in words is "twenty trillion, one hundred twenty billion, three hundred twenty-one million, one hundred twenty-two thousand, two hundred one".