11101220011111 has 4 divisors (see below), whose sum is σ = 11101957501752. Its totient is φ = 11100482520472.

The previous prime is 11101220011069. The next prime is 11101220011121. The reversal of 11101220011111 is 11111002210111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11101220011111 - 2¹³ = 11101220002919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101220011091 and 11101220011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101220011121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368722741 + ... + 368752846.

It is an arithmetic number, because the mean of its divisors is an integer number (2775489375438).

Almost surely, 2^{11101220011111} is an apocalyptic number.

11101220011111 is a deficient number, since it is larger than the sum of its proper divisors (737490641).

11101220011111 is an equidigital number, since it uses as much as digits as its factorization.

11101220011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737490640.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11101220011111 its reverse (11111002210111), we get a palindrome (22212222221222).

The spelling of 11101220011111 in words is "eleven trillion, one hundred one billion, two hundred twenty million, eleven thousand, one hundred eleven".