2002121112111 has 4 divisors (see below), whose sum is σ = 2669494816152. Its totient is φ = 1334747408072.

The previous prime is 2002121112107. The next prime is 2002121112157. The reversal of 2002121112111 is 1112111212002.

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 2002121112111 - 2² = 2002121112107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002121112181) 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, 333686852016 + ... + 333686852021.

It is an arithmetic number, because the mean of its divisors is an integer number (667373704038).

Almost surely, 2^{2002121112111} is an apocalyptic number.

2002121112111 is a deficient number, since it is larger than the sum of its proper divisors (667373704041).

2002121112111 is an equidigital number, since it uses as much as digits as its factorization.

2002121112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667373704040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2002121112111 its reverse (1112111212002), we get a palindrome (3114232324113).

The spelling of 2002121112111 in words is "two trillion, two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred eleven".