212113011111 has 8 divisors (see below), whose sum is σ = 282820623984. Its totient is φ = 141407036160.

The previous prime is 212113011073. The next prime is 212113011119. The reversal of 212113011111 is 111110311212.

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

It is not a de Polignac number, because 212113011111 - 2²³ = 212104622503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212113011119) 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, 66196 + ... + 654681.

It is an arithmetic number, because the mean of its divisors is an integer number (35352577998).

Almost surely, 2^212113011111 is an apocalyptic number.

212113011111 is a deficient number, since it is larger than the sum of its proper divisors (70707612873).

212113011111 is an equidigital number, since it uses as much as digits as its factorization.

212113011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818961.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 212113011111 its reverse (111110311212), we get a palindrome (323223322323).

The spelling of 212113011111 in words is "two hundred twelve billion, one hundred thirteen million, eleven thousand, one hundred eleven".