1002120111111 has 32 divisors (see below), whose sum is σ = 1584614592000. Its totient is φ = 562934265600.

The previous prime is 1002120111067. The next prime is 1002120111119. The reversal of 1002120111111 is 1111110212001.

It is not a de Polignac number, because 1002120111111 - 2¹⁴ = 1002120094727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002120111119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8192490 + ... + 8313911.

It is an arithmetic number, because the mean of its divisors is an integer number (49519206000).

Almost surely, 2^{1002120111111} is an apocalyptic number.

1002120111111 is a deficient number, since it is larger than the sum of its proper divisors (582494480889).

1002120111111 is an equidigital number, since it uses as much as digits as its factorization.

1002120111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16506484 (or 16506470 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1002120111111 its reverse (1111110212001), we get a palindrome (2113230323112).

The spelling of 1002120111111 in words is "one trillion, two billion, one hundred twenty million, one hundred eleven thousand, one hundred eleven".