2002100020121 has 8 divisors (see below), whose sum is σ = 2025462695424. Its totient is φ = 1978792905600.

The previous prime is 2002100020013. The next prime is 2002100020133. The reversal of 2002100020121 is 1210200012002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002100020121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002100020171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13817705 + ... + 13961846.

It is an arithmetic number, because the mean of its divisors is an integer number (253182836928).

Almost surely, 2^{2002100020121} is an apocalyptic number.

It is an amenable number.

2002100020121 is a deficient number, since it is larger than the sum of its proper divisors (23362675303).

2002100020121 is an equidigital number, since it uses as much as digits as its factorization.

2002100020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27780391.

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

Adding to 2002100020121 its reverse (1210200012002), we get a palindrome (3212300032123).

The spelling of 2002100020121 in words is "two trillion, two billion, one hundred million, twenty thousand, one hundred twenty-one".