11221111200111 has 4 divisors (see below), whose sum is σ = 14961481600152. Its totient is φ = 7480740800072.

The previous prime is 11221111200097. The next prime is 11221111200151. The reversal of 11221111200111 is 11100211112211.

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 11221111200111 - 2¹³ = 11221111191919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221111200151) 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, 1870185200016 + ... + 1870185200021.

It is an arithmetic number, because the mean of its divisors is an integer number (3740370400038).

Almost surely, 2^{11221111200111} is an apocalyptic number.

11221111200111 is a deficient number, since it is larger than the sum of its proper divisors (3740370400041).

11221111200111 is an equidigital number, since it uses as much as digits as its factorization.

11221111200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740370400040.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11221111200111 its reverse (11100211112211), we get a palindrome (22321322312322).

The spelling of 11221111200111 in words is "eleven trillion, two hundred twenty-one billion, one hundred eleven million, two hundred thousand, one hundred eleven".