212211112111 has 8 divisors (see below), whose sum is σ = 214906648320. Its totient is φ = 209515809048.

The previous prime is 212211112079. The next prime is 212211112129. The reversal of 212211112111 is 111211112212.

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

It is a cyclic number.

It is not a de Polignac number, because 212211112111 - 2⁵ = 212211112079 is a prime.

It is a super-2 number, since 2×212211112111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211112411) 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, 2459280 + ... + 2544106.

It is an arithmetic number, because the mean of its divisors is an integer number (26863331040).

Almost surely, 2^212211112111 is an apocalyptic number.

212211112111 is a deficient number, since it is larger than the sum of its proper divisors (2695536209).

212211112111 is an equidigital number, since it uses as much as digits as its factorization.

212211112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116573.

The product of its digits is 16, while the sum is 16.

Adding to 212211112111 its reverse (111211112212), we get a palindrome (323422224323).

The spelling of 212211112111 in words is "two hundred twelve billion, two hundred eleven million, one hundred twelve thousand, one hundred eleven".