12102312221111 has 4 divisors (see below), whose sum is σ = 13831213966992. Its totient is φ = 10373410475232.

The previous prime is 12102312221053. The next prime is 12102312221119. The reversal of 12102312221111 is 11112221320121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12102312221111 - 2⁶ = 12102312221047 is a prime.

It is a super-2 number, since 2×12102312221111² (a number of 27 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 (12102312221119) 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, 864450872930 + ... + 864450872943.

It is an arithmetic number, because the mean of its divisors is an integer number (3457803491748).

Almost surely, 2^{12102312221111} is an apocalyptic number.

12102312221111 is a deficient number, since it is larger than the sum of its proper divisors (1728901745881).

12102312221111 is an equidigital number, since it uses as much as digits as its factorization.

12102312221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728901745880.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 12102312221111 its reverse (11112221320121), we get a palindrome (23214533541232).

The spelling of 12102312221111 in words is "twelve trillion, one hundred two billion, three hundred twelve million, two hundred twenty-one thousand, one hundred eleven".