1002112120111 has 4 divisors (see below), whose sum is σ = 1006488155800. Its totient is φ = 997736084424.

The previous prime is 1002112120049. The next prime is 1002112120129. The reversal of 1002112120111 is 1110212112001.

It is a happy number.

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 1002112120111 - 2¹³ = 1002112111919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002112120091 and 1002112120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002112120811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188017501 + ... + 2188017958.

It is an arithmetic number, because the mean of its divisors is an integer number (251622038950).

Almost surely, 2^{1002112120111} is an apocalyptic number.

1002112120111 is a deficient number, since it is larger than the sum of its proper divisors (4376035689).

1002112120111 is an equidigital number, since it uses as much as digits as its factorization.

1002112120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4376035688.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1002112120111 its reverse (1110212112001), we get a palindrome (2112324232112).

The spelling of 1002112120111 in words is "one trillion, two billion, one hundred twelve million, one hundred twenty thousand, one hundred eleven".