1002210210121 has 2 divisors, whose sum is σ = 1002210210122. Its totient is φ = 1002210210120.

The previous prime is 1002210210109. The next prime is 1002210210137. The reversal of 1002210210121 is 1210120122001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999872004096 + 2338206025 = 999936^2 + 48355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002210210121 - 2¹³ = 1002210201929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002210210151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501105105060 + 501105105061.

It is an arithmetic number, because the mean of its divisors is an integer number (501105105061).

Almost surely, 2^{1002210210121} is an apocalyptic number.

It is an amenable number.

1002210210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002210210121 is an equidigital number, since it uses as much as digits as its factorization.

1002210210121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1002210210121 its reverse (1210120122001), we get a palindrome (2212330332122).

The spelling of 1002210210121 in words is "one trillion, two billion, two hundred ten million, two hundred ten thousand, one hundred twenty-one".