2010002100121 has 2 divisors, whose sum is σ = 2010002100122. Its totient is φ = 2010002100120.

The previous prime is 2010002100107. The next prime is 2010002100151. The reversal of 2010002100121 is 1210012000102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1321120360000 + 688881740121 = 1149400^2 + 829989^2 .

It is a cyclic number.

It is not a de Polignac number, because 2010002100121 - 2⁵ = 2010002100089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2010002100098 and 2010002100107.

It is not a weakly prime, because it can be changed into another prime (2010002100151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005001050060 + 1005001050061.

It is an arithmetic number, because the mean of its divisors is an integer number (1005001050061).

Almost surely, 2^{2010002100121} is an apocalyptic number.

It is an amenable number.

2010002100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2010002100121 is an equidigital number, since it uses as much as digits as its factorization.

2010002100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2010002100121 its reverse (1210012000102), we get a palindrome (3220014100223).

The spelling of 2010002100121 in words is "two trillion, ten billion, two million, one hundred thousand, one hundred twenty-one".