2002112121011 has 4 divisors (see below), whose sum is σ = 2002134466800. Its totient is φ = 2002089775224.

The previous prime is 2002112120999. The next prime is 2002112121013. The reversal of 2002112121011 is 1101212112002.

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 2002112121011 - 2⁶ = 2002112120947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002112121013) 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, 11037956 + ... + 11217873.

It is an arithmetic number, because the mean of its divisors is an integer number (500533616700).

Almost surely, 2^{2002112121011} is an apocalyptic number.

2002112121011 is a deficient number, since it is larger than the sum of its proper divisors (22345789).

2002112121011 is an equidigital number, since it uses as much as digits as its factorization.

2002112121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22345788.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2002112121011 its reverse (1101212112002), we get a palindrome (3103324233013).

Subtracting from 2002112121011 its reverse (1101212112002), we obtain a palindrome (900900009009).

The spelling of 2002112121011 in words is "two trillion, two billion, one hundred twelve million, one hundred twenty-one thousand, eleven".