11201021111 has 8 divisors (see below), whose sum is σ = 12802183584. Its totient is φ = 9600112800.

The previous prime is 11201021107. The next prime is 11201021119. The reversal of 11201021111 is 11112010211.

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 11201021111 - 2² = 11201021107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201021092 and 11201021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201021119) 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, 42761 + ... + 155661.

It is an arithmetic number, because the mean of its divisors is an integer number (1600272948).

Almost surely, 2^11201021111 is an apocalyptic number.

11201021111 is a deficient number, since it is larger than the sum of its proper divisors (1601162473).

11201021111 is a wasteful number, since it uses less digits than its factorization.

11201021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127081.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11201021111 its reverse (11112010211), we get a palindrome (22313031322).

It can be divided in two parts, 112010211 and 11, that multiplied together give a palindrome (1232112321).

The spelling of 11201021111 in words is "eleven billion, two hundred one million, twenty-one thousand, one hundred eleven".