12102111211 has 8 divisors (see below), whose sum is σ = 12362434560. Its totient is φ = 11843628072.

The previous prime is 12102111193. The next prime is 12102111247. The reversal of 12102111211 is 11211120121.

It is a happy number.

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 12102111211 - 2⁷ = 12102111083 is a prime.

It is a super-2 number, since 2×12102111211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102111191 and 12102111200.

It is not an unprimeable number, because it can be changed into a prime (12102111611) 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, 446755 + ... + 473068.

It is an arithmetic number, because the mean of its divisors is an integer number (1545304320).

Almost surely, 2^12102111211 is an apocalyptic number.

12102111211 is a deficient number, since it is larger than the sum of its proper divisors (260323349).

12102111211 is an equidigital number, since it uses as much as digits as its factorization.

12102111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920105.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12102111211 its reverse (11211120121), we get a palindrome (23313231332).

The spelling of 12102111211 in words is "twelve billion, one hundred two million, one hundred eleven thousand, two hundred eleven".