20002112210111 has 4 divisors (see below), whose sum is σ = 20379510553752. Its totient is φ = 19624713866472.

The previous prime is 20002112210027. The next prime is 20002112210131. The reversal of 20002112210111 is 11101221120002.

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 20002112210111 - 2⁴² = 15604065699007 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 (20002112210131) 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, 188699171741 + ... + 188699171846.

It is an arithmetic number, because the mean of its divisors is an integer number (5094877638438).

Almost surely, 2^{20002112210111} is an apocalyptic number.

20002112210111 is a deficient number, since it is larger than the sum of its proper divisors (377398343641).

20002112210111 is an equidigital number, since it uses as much as digits as its factorization.

20002112210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377398343640.

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

Adding to 20002112210111 its reverse (11101221120002), we get a palindrome (31103333330113).

The spelling of 20002112210111 in words is "twenty trillion, two billion, one hundred twelve million, two hundred ten thousand, one hundred eleven".