212101121001111 has 8 divisors (see below), whose sum is σ = 292553270346480. Its totient is φ = 136524859494912.

The previous prime is 212101121001071. The next prime is 212101121001151. The reversal of 212101121001111 is 111100121101212.

It is an interprime number because it is at equal distance from previous prime (212101121001071) and next prime (212101121001151).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212101121001111 - 2³⁹ = 211551365187223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101121001151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218971959690 + ... + 1218971959863.

It is an arithmetic number, because the mean of its divisors is an integer number (36569158793310).

Almost surely, 2^{212101121001111} is an apocalyptic number.

212101121001111 is a deficient number, since it is larger than the sum of its proper divisors (80452149345369).

212101121001111 is a wasteful number, since it uses less digits than its factorization.

212101121001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437943919585.

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

Adding to 212101121001111 its reverse (111100121101212), we get a palindrome (323201242102323).

The spelling of 212101121001111 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty-one million, one thousand, one hundred eleven".