20002012122111 has 4 divisors (see below), whose sum is σ = 26669349496152. Its totient is φ = 13334674748072.

The previous prime is 20002012122107. The next prime is 20002012122119. The reversal of 20002012122111 is 11122121020002.

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 20002012122111 - 2² = 20002012122107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002012122119) 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, 3333668687016 + ... + 3333668687021.

It is an arithmetic number, because the mean of its divisors is an integer number (6667337374038).

Almost surely, 2^{20002012122111} is an apocalyptic number.

20002012122111 is a deficient number, since it is larger than the sum of its proper divisors (6667337374041).

20002012122111 is an equidigital number, since it uses as much as digits as its factorization.

20002012122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667337374040.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20002012122111 its reverse (11122121020002), we get a palindrome (31124133142113).

The spelling of 20002012122111 in words is "twenty trillion, two billion, twelve million, one hundred twenty-two thousand, one hundred eleven".