1002001112121 has 4 divisors (see below), whose sum is σ = 1336001482832. Its totient is φ = 668000741412.

The previous prime is 1002001112117. The next prime is 1002001112159. The reversal of 1002001112121 is 1212111002001.

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 not a de Polignac number, because 1002001112121 - 2² = 1002001112117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002001112097 and 1002001112106.

It is not an unprimeable number, because it can be changed into a prime (1002001119121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167000185351 + ... + 167000185356.

It is an arithmetic number, because the mean of its divisors is an integer number (334000370708).

Almost surely, 2^{1002001112121} is an apocalyptic number.

It is an amenable number.

1002001112121 is a deficient number, since it is larger than the sum of its proper divisors (334000370711).

1002001112121 is an equidigital number, since it uses as much as digits as its factorization.

1002001112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334000370710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1002001112121 its reverse (1212111002001), we get a palindrome (2214112114122).

The spelling of 1002001112121 in words is "one trillion, two billion, one million, one hundred twelve thousand, one hundred twenty-one".