12210101111 has 6 divisors (see below), whose sum is σ = 13221588960. Its totient is φ = 11270862408.

The previous prime is 12210101089. The next prime is 12210101117. The reversal of 12210101111 is 11110101221.

It is not a de Polignac number, because 12210101111 - 2¹⁸ = 12209838967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210101092 and 12210101101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210101117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36124391 + ... + 36124728.

It is an arithmetic number, because the mean of its divisors is an integer number (2203598160).

Almost surely, 2^12210101111 is an apocalyptic number.

12210101111 is a deficient number, since it is larger than the sum of its proper divisors (1011487849).

12210101111 is an equidigital number, since it uses as much as digits as its factorization.

12210101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72249145 (or 72249132 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12210101111 its reverse (11110101221), we get a palindrome (23320202332).

The spelling of 12210101111 in words is "twelve billion, two hundred ten million, one hundred one thousand, one hundred eleven".