10210210200121 has 2 divisors, whose sum is σ = 10210210200122. Its totient is φ = 10210210200120.

The previous prime is 10210210200109. The next prime is 10210210200137. The reversal of 10210210200121 is 12100201201201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6395532465721 + 3814677734400 = 2528939^2 + 1953120^2 .

It is a cyclic number.

It is not a de Polignac number, because 10210210200121 - 2¹¹ = 10210210198073 is a prime.

It is not a weakly prime, because it can be changed into another prime (10210210200101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105105100060 + 5105105100061.

It is an arithmetic number, because the mean of its divisors is an integer number (5105105100061).

Almost surely, 2^{10210210200121} is an apocalyptic number.

It is an amenable number.

10210210200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10210210200121 is an equidigital number, since it uses as much as digits as its factorization.

10210210200121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10210210200121 its reverse (12100201201201), we get a palindrome (22310411401322).

The spelling of 10210210200121 in words is "ten trillion, two hundred ten billion, two hundred ten million, two hundred thousand, one hundred twenty-one".