11201112112021 has 16 divisors (see below), whose sum is σ = 12102076289520. Its totient is φ = 10305820546560.

The previous prime is 11201112111983. The next prime is 11201112112067. The reversal of 11201112112021 is 12021121110211.

It can be written as a sum of positive squares in 8 ways, for example, as 191397500100 + 11009714611921 = 437490^2 + 3318089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201112112021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201112111986 and 11201112112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201112112121) 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, 4020001 + ... + 6209881.

It is an arithmetic number, because the mean of its divisors is an integer number (756379768095).

Almost surely, 2^{11201112112021} is an apocalyptic number.

It is an amenable number.

11201112112021 is a deficient number, since it is larger than the sum of its proper divisors (900964177499).

11201112112021 is a wasteful number, since it uses less digits than its factorization.

11201112112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191176.

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

Adding to 11201112112021 its reverse (12021121110211), we get a palindrome (23222233222232).

The spelling of 11201112112021 in words is "eleven trillion, two hundred one billion, one hundred twelve million, one hundred twelve thousand, twenty-one".