1000002002121 has 12 divisors (see below), whose sum is σ = 1475180259072. Its totient is φ = 652483575576.

The previous prime is 1000002002071. The next prime is 1000002002123. The reversal of 1000002002121 is 1212002000001.

1000002002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000002002121 - 2⁷ = 1000002001993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000002002123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1182035041 + ... + 1182035886.

It is an arithmetic number, because the mean of its divisors is an integer number (122931688256).

Almost surely, 2^{1000002002121} is an apocalyptic number.

It is an amenable number.

1000002002121 is a deficient number, since it is larger than the sum of its proper divisors (475178256951).

1000002002121 is a wasteful number, since it uses less digits than its factorization.

1000002002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364070980 (or 2364070977 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000002002121 its reverse (1212002000001), we get a palindrome (2212004002122).

The spelling of 1000002002121 in words is "one trillion, two million, two thousand, one hundred twenty-one".