1002121002111 has 4 divisors (see below), whose sum is σ = 1336161336152. Its totient is φ = 668080668072.

The previous prime is 1002121002053. The next prime is 1002121002143. The reversal of 1002121002111 is 1112001212001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1002121002111 - 2¹⁸ = 1002120739967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002121002191) 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, 167020167016 + ... + 167020167021.

It is an arithmetic number, because the mean of its divisors is an integer number (334040334038).

Almost surely, 2^{1002121002111} is an apocalyptic number.

1002121002111 is a deficient number, since it is larger than the sum of its proper divisors (334040334041).

1002121002111 is an equidigital number, since it uses as much as digits as its factorization.

1002121002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334040334040.

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

Adding to 1002121002111 its reverse (1112001212001), we get a palindrome (2114122214112).

The spelling of 1002121002111 in words is "one trillion, two billion, one hundred twenty-one million, two thousand, one hundred eleven".