20011201111011 has 8 divisors (see below), whose sum is σ = 29107201616064. Its totient is φ = 12128000673320.

The previous prime is 20011201111001. The next prime is 20011201111093. The reversal of 20011201111011 is 11011110211002.

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 20011201111011 - 2²¹ = 20011199013859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20011201111001) 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, 303200016801 + ... + 303200016866.

It is an arithmetic number, because the mean of its divisors is an integer number (3638400202008).

Almost surely, 2^{20011201111011} is an apocalyptic number.

20011201111011 is a deficient number, since it is larger than the sum of its proper divisors (9096000505053).

20011201111011 is a wasteful number, since it uses less digits than its factorization.

20011201111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606400033681.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20011201111011 its reverse (11011110211002), we get a palindrome (31022311322013).

Subtracting from 20011201111011 its reverse (11011110211002), we obtain a palindrome (9000090900009).

The spelling of 20011201111011 in words is "twenty trillion, eleven billion, two hundred one million, one hundred eleven thousand, eleven".