210122122020101 has 2 divisors, whose sum is σ = 210122122020102. Its totient is φ = 210122122020100.

The previous prime is 210122122020049. The next prime is 210122122020133. The reversal of 210122122020101 is 101020221221012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123938656935076 + 86183465085025 = 11132774^2 + 9283505^2 .

It is a cyclic number.

It is not a de Polignac number, because 210122122020101 - 2⁶ = 210122122020037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210122122020101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210122122020401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105061061010050 + 105061061010051.

It is an arithmetic number, because the mean of its divisors is an integer number (105061061010051).

Almost surely, 2^{210122122020101} is an apocalyptic number.

It is an amenable number.

210122122020101 is a deficient number, since it is larger than the sum of its proper divisors (1).

210122122020101 is an equidigital number, since it uses as much as digits as its factorization.

210122122020101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210122122020101 its reverse (101020221221012), we get a palindrome (311142343241113).

The spelling of 210122122020101 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred twenty-two million, twenty thousand, one hundred one".