2002000210121 has 4 divisors (see below), whose sum is σ = 2008437510144. Its totient is φ = 1995562910100.

The previous prime is 2002000210099. The next prime is 2002000210123. The reversal of 2002000210121 is 1210120002002.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-2002000210121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002000210123) 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, 3218649545 + ... + 3218650166.

It is an arithmetic number, because the mean of its divisors is an integer number (502109377536).

Almost surely, 2^{2002000210121} is an apocalyptic number.

It is an amenable number.

2002000210121 is a deficient number, since it is larger than the sum of its proper divisors (6437300023).

2002000210121 is an equidigital number, since it uses as much as digits as its factorization.

2002000210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6437300022.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2002000210121 its reverse (1210120002002), we get a palindrome (3212120212123).

The spelling of 2002000210121 in words is "two trillion, two billion, two hundred ten thousand, one hundred twenty-one".