20011020012211 has 8 divisors (see below), whose sum is σ = 20886387183360. Its totient is φ = 19136096409672.

The previous prime is 20011020012187. The next prime is 20011020012239. The reversal of 20011020012211 is 11221002011002.

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-20011020012211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011020012191 and 20011020012200.

It is not an unprimeable number, because it can be changed into a prime (20011020012251) 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, 110799951 + ... + 110980408.

It is an arithmetic number, because the mean of its divisors is an integer number (2610798397920).

Almost surely, 2^{20011020012211} is an apocalyptic number.

20011020012211 is a deficient number, since it is larger than the sum of its proper divisors (875367171149).

20011020012211 is a wasteful number, since it uses less digits than its factorization.

20011020012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221784305.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20011020012211 its reverse (11221002011002), we get a palindrome (31232022023213).

The spelling of 20011020012211 in words is "twenty trillion, eleven billion, twenty million, twelve thousand, two hundred eleven".