20111202212011 has 16 divisors (see below), whose sum is σ = 20263694651200. Its totient is φ = 19959203053440.

The previous prime is 20111202212009. The next prime is 20111202212027. The reversal of 20111202212011 is 11021220211102.

It is a cyclic number.

It is not a de Polignac number, because 20111202212011 - 2¹ = 20111202212009 is a prime.

It is a super-2 number, since 2×20111202212011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111202212041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191634325 + ... + 191739241.

It is an arithmetic number, because the mean of its divisors is an integer number (1266480915700).

Almost surely, 2^{20111202212011} is an apocalyptic number.

20111202212011 is a deficient number, since it is larger than the sum of its proper divisors (152492439189).

20111202212011 is a wasteful number, since it uses less digits than its factorization.

20111202212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107254.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20111202212011 its reverse (11021220211102), we get a palindrome (31132422423113).

The spelling of 20111202212011 in words is "twenty trillion, one hundred eleven billion, two hundred two million, two hundred twelve thousand, eleven".