20221121111101 has 2 divisors, whose sum is σ = 20221121111102. Its totient is φ = 20221121111100.

The previous prime is 20221121111083. The next prime is 20221121111129. The reversal of 20221121111101 is 10111112112202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17083953959076 + 3137167152025 = 4133274^2 + 1771205^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221121111101 - 2⁷ = 20221121110973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221121118101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110560555550 + 10110560555551.

It is an arithmetic number, because the mean of its divisors is an integer number (10110560555551).

Almost surely, 2^{20221121111101} is an apocalyptic number.

It is an amenable number.

20221121111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221121111101 is an equidigital number, since it uses as much as digits as its factorization.

20221121111101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20221121111101 its reverse (10111112112202), we get a palindrome (30332233223303).

The spelling of 20221121111101 in words is "twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred one".