20002011122111 has 8 divisors (see below), whose sum is σ = 20111096410704. Its totient is φ = 19892981998080.

The previous prime is 20002011122003. The next prime is 20002011122143. The reversal of 20002011122111 is 11122111020002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002011122111 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 (20002011122411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13326836 + ... + 14751561.

It is an arithmetic number, because the mean of its divisors is an integer number (2513887051338).

Almost surely, 2^{20002011122111} is an apocalyptic number.

20002011122111 is a deficient number, since it is larger than the sum of its proper divisors (109085288593).

20002011122111 is a wasteful number, since it uses less digits than its factorization.

20002011122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28082281.

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

Adding to 20002011122111 its reverse (11122111020002), we get a palindrome (31124122142113).

The spelling of 20002011122111 in words is "twenty trillion, two billion, eleven million, one hundred twenty-two thousand, one hundred eleven".