210022221120121 has 2 divisors, whose sum is σ = 210022221120122. Its totient is φ = 210022221120120.

The previous prime is 210022221120113. The next prime is 210022221120139. The reversal of 210022221120121 is 121021122220012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209975720510521 + 46500609600 = 14490539^2 + 215640^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022221120121 - 2³ = 210022221120113 is a prime.

It is a super-2 number, since 2×210022221120121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210022221120521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011110560060 + 105011110560061.

It is an arithmetic number, because the mean of its divisors is an integer number (105011110560061).

Almost surely, 2^{210022221120121} is an apocalyptic number.

It is an amenable number.

210022221120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022221120121 is an equidigital number, since it uses as much as digits as its factorization.

210022221120121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 210022221120121 its reverse (121021122220012), we get a palindrome (331043343340133).

The spelling of 210022221120121 in words is "two hundred ten trillion, twenty-two billion, two hundred twenty-one million, one hundred twenty thousand, one hundred twenty-one".