1002100200121 has 4 divisors (see below), whose sum is σ = 1014173696592. Its totient is φ = 990026703652.

The previous prime is 1002100200109. The next prime is 1002100200163. The reversal of 1002100200121 is 1210020012001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1002100200121 - 2⁹ = 1002100199609 is a prime.

It is a super-2 number, since 2×1002100200121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002100200098 and 1002100200107.

It is not an unprimeable number, because it can be changed into a prime (1002100204121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6036748111 + ... + 6036748276.

It is an arithmetic number, because the mean of its divisors is an integer number (253543424148).

Almost surely, 2^{1002100200121} is an apocalyptic number.

It is an amenable number.

1002100200121 is a deficient number, since it is larger than the sum of its proper divisors (12073496471).

1002100200121 is an equidigital number, since it uses as much as digits as its factorization.

1002100200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12073496470.

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

Adding to 1002100200121 its reverse (1210020012001), we get a palindrome (2212120212122).

The spelling of 1002100200121 in words is "one trillion, two billion, one hundred million, two hundred thousand, one hundred twenty-one".