1002111212111 has 4 divisors (see below), whose sum is σ = 1002114093000. Its totient is φ = 1002108331224.

The previous prime is 1002111211991. The next prime is 1002111212119. The reversal of 1002111212111 is 1112121112001.

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

It is a cyclic number.

It is not a de Polignac number, because 1002111212111 - 2³⁰ = 1001037470287 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 (1002111212119) 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, 833396 + ... + 1642793.

It is an arithmetic number, because the mean of its divisors is an integer number (250528523250).

Almost surely, 2^{1002111212111} is an apocalyptic number.

1002111212111 is a deficient number, since it is larger than the sum of its proper divisors (2880889).

1002111212111 is an equidigital number, since it uses as much as digits as its factorization.

1002111212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880888.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1002111212111 its reverse (1112121112001), we get a palindrome (2114232324112).

The spelling of 1002111212111 in words is "one trillion, two billion, one hundred eleven million, two hundred twelve thousand, one hundred eleven".