11001212112111 has 16 divisors (see below), whose sum is σ = 15801137412480. Its totient is φ = 6768037334880.

The previous prime is 11001212112109. The next prime is 11001212112133. The reversal of 11001212112111 is 11121121210011.

11001212112111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11001212112111 - 2¹ = 11001212112109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001212112151) 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, 40265221 + ... + 40537518.

It is an arithmetic number, because the mean of its divisors is an integer number (987571088280).

Almost surely, 2^{11001212112111} is an apocalyptic number.

11001212112111 is a deficient number, since it is larger than the sum of its proper divisors (4799925300369).

11001212112111 is a wasteful number, since it uses less digits than its factorization.

11001212112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80806246.

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

Adding to 11001212112111 its reverse (11121121210011), we get a palindrome (22122333322122).

The spelling of 11001212112111 in words is "eleven trillion, one billion, two hundred twelve million, one hundred twelve thousand, one hundred eleven".