11212100112111 has 4 divisors (see below), whose sum is σ = 14949466816152. Its totient is φ = 7474733408072.

The previous prime is 11212100112091. The next prime is 11212100112127. The reversal of 11212100112111 is 11121100121211.

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 11212100112111 - 2¹⁹ = 11212099587823 is a prime.

It is a super-2 number, since 2×11212100112111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212100112151) 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, 1868683352016 + ... + 1868683352021.

It is an arithmetic number, because the mean of its divisors is an integer number (3737366704038).

Almost surely, 2^{11212100112111} is an apocalyptic number.

11212100112111 is a deficient number, since it is larger than the sum of its proper divisors (3737366704041).

11212100112111 is an equidigital number, since it uses as much as digits as its factorization.

11212100112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737366704040.

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

Adding to 11212100112111 its reverse (11121100121211), we get a palindrome (22333200233322).

The spelling of 11212100112111 in words is "eleven trillion, two hundred twelve billion, one hundred million, one hundred twelve thousand, one hundred eleven".