20102222022121 has 2 divisors, whose sum is σ = 20102222022122. Its totient is φ = 20102222022120.

The previous prime is 20102222022107. The next prime is 20102222022139. The reversal of 20102222022121 is 12122022220102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19746247505625 + 355974516496 = 4443675^2 + 596636^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102222022121 - 2⁵ = 20102222022089 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102222022101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051111011060 + 10051111011061.

It is an arithmetic number, because the mean of its divisors is an integer number (10051111011061).

Almost surely, 2^{20102222022121} is an apocalyptic number.

It is an amenable number.

20102222022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102222022121 is an equidigital number, since it uses as much as digits as its factorization.

20102222022121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20102222022121 its reverse (12122022220102), we get a palindrome (32224244242223).

The spelling of 20102222022121 in words is "twenty trillion, one hundred two billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-one".