20000121102011 has 8 divisors (see below), whose sum is σ = 21276961845264. Its totient is φ = 18734431806720.

The previous prime is 20000121102007. The next prime is 20000121102047. The reversal of 20000121102011 is 11020112100002.

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

It is a cyclic number.

It is not a de Polignac number, because 20000121102011 - 2² = 20000121102007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000121101983 and 20000121102001.

It is not an unprimeable number, because it can be changed into a prime (20000121102211) 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, 2787858290 + ... + 2787865463.

It is an arithmetic number, because the mean of its divisors is an integer number (2659620230658).

Almost surely, 2^{20000121102011} is an apocalyptic number.

20000121102011 is a deficient number, since it is larger than the sum of its proper divisors (1276840743253).

20000121102011 is a wasteful number, since it uses less digits than its factorization.

20000121102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575723981.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20000121102011 its reverse (11020112100002), we get a palindrome (31020233202013).

The spelling of 20000121102011 in words is "twenty trillion, one hundred twenty-one million, one hundred two thousand, eleven".