22020221121121 has 2 divisors, whose sum is σ = 22020221121122. Its totient is φ = 22020221121120.

The previous prime is 22020221121113. The next prime is 22020221121127. The reversal of 22020221121121 is 12112112202022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14221466730496 + 7798754390625 = 3771136^2 + 2792625^2 .

It is a cyclic number.

It is not a de Polignac number, because 22020221121121 - 2³ = 22020221121113 is a prime.

It is not a weakly prime, because it can be changed into another prime (22020221121127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010110560560 + 11010110560561.

It is an arithmetic number, because the mean of its divisors is an integer number (11010110560561).

Almost surely, 2^{22020221121121} is an apocalyptic number.

It is an amenable number.

22020221121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22020221121121 is an equidigital number, since it uses as much as digits as its factorization.

22020221121121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22020221121121 its reverse (12112112202022), we get a palindrome (34132333323143).

The spelling of 22020221121121 in words is "twenty-two trillion, twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-one".