210122202022081 has 2 divisors, whose sum is σ = 210122202022082. Its totient is φ = 210122202022080.

The previous prime is 210122202022043. The next prime is 210122202022141. The reversal of 210122202022081 is 180220202221012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207743793422400 + 2378408599681 = 14413320^2 + 1542209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210122202022081 is a prime.

It is a super-2 number, since 2×210122202022081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210122202022001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105061101011040 + 105061101011041.

It is an arithmetic number, because the mean of its divisors is an integer number (105061101011041).

Almost surely, 2^{210122202022081} is an apocalyptic number.

It is an amenable number.

210122202022081 is a deficient number, since it is larger than the sum of its proper divisors (1).

210122202022081 is an equidigital number, since it uses as much as digits as its factorization.

210122202022081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 210122202022081 its reverse (180220202221012), we get a palindrome (390342404243093).

The spelling of 210122202022081 in words is "two hundred ten trillion, one hundred twenty-two billion, two hundred two million, twenty-two thousand, eighty-one".