1002000122111 has 4 divisors (see below), whose sum is σ = 1003194402000. Its totient is φ = 1000805842224.

The previous prime is 1002000122099. The next prime is 1002000122113. The reversal of 1002000122111 is 1112210002001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002000122111 is a prime.

It is a super-2 number, since 2×1002000122111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002000122092 and 1002000122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002000122113) 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, 597138686 + ... + 597140363.

It is an arithmetic number, because the mean of its divisors is an integer number (250798600500).

Almost surely, 2^{1002000122111} is an apocalyptic number.

1002000122111 is a deficient number, since it is larger than the sum of its proper divisors (1194279889).

1002000122111 is an equidigital number, since it uses as much as digits as its factorization.

1002000122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194279888.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1002000122111 its reverse (1112210002001), we get a palindrome (2114210124112).

The spelling of 1002000122111 in words is "one trillion, two billion, one hundred twenty-two thousand, one hundred eleven".