212011112001111 has 4 divisors (see below), whose sum is σ = 282681482668152. Its totient is φ = 141340741334072.

The previous prime is 212011112001107. The next prime is 212011112001127. The reversal of 212011112001111 is 111100211110212.

212011112001111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212011112001111 - 2² = 212011112001107 is a prime.

It is a super-3 number, since 3×212011112001111³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011112002111) 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, 35335185333516 + ... + 35335185333521.

It is an arithmetic number, because the mean of its divisors is an integer number (70670370667038).

Almost surely, 2^{212011112001111} is an apocalyptic number.

212011112001111 is a deficient number, since it is larger than the sum of its proper divisors (70670370667041).

212011112001111 is an equidigital number, since it uses as much as digits as its factorization.

212011112001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70670370667040.

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

Adding to 212011112001111 its reverse (111100211110212), we get a palindrome (323111323111323).

The spelling of 212011112001111 in words is "two hundred twelve trillion, eleven billion, one hundred twelve million, one thousand, one hundred eleven".