20131202220111 has 24 divisors (see below), whose sum is σ = 29191232176704. Its totient is φ = 13368745336320.

The previous prime is 20131202220037. The next prime is 20131202220133. The reversal of 20131202220111 is 11102220213102.

20131202220111 is a `hidden beast` number, since 2 + 0 + 131 + 202 + 220 + 111 = 666.

It is not a de Polignac number, because 20131202220111 - 2¹⁹ = 20131201695823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131202220211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12140275 + ... + 13698491.

It is an arithmetic number, because the mean of its divisors is an integer number (1216301340696).

Almost surely, 2^{20131202220111} is an apocalyptic number.

20131202220111 is a deficient number, since it is larger than the sum of its proper divisors (9060029956593).

20131202220111 is a wasteful number, since it uses less digits than its factorization.

20131202220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563791 (or 1563788 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20131202220111 its reverse (11102220213102), we get a palindrome (31233422433213).

The spelling of 20131202220111 in words is "twenty trillion, one hundred thirty-one billion, two hundred two million, two hundred twenty thousand, one hundred eleven".