20120222011321 has 2 divisors, whose sum is σ = 20120222011322. Its totient is φ = 20120222011320.

The previous prime is 20120222011247. The next prime is 20120222011343. The reversal of 20120222011321 is 12311022202102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11338843982400 + 8781378028921 = 3367320^2 + 2963339^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120222011321 - 2³¹ = 20118074527673 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120222011621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060111005660 + 10060111005661.

It is an arithmetic number, because the mean of its divisors is an integer number (10060111005661).

Almost surely, 2^{20120222011321} is an apocalyptic number.

It is an amenable number.

20120222011321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120222011321 is an equidigital number, since it uses as much as digits as its factorization.

20120222011321 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20120222011321 its reverse (12311022202102), we get a palindrome (32431244213423).

The spelling of 20120222011321 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, eleven thousand, three hundred twenty-one".