12011222101 has 4 divisors (see below), whose sum is σ = 12017238732. Its totient is φ = 12005205472.

The previous prime is 12011222089. The next prime is 12011222107. The reversal of 12011222101 is 10122211021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2723274225 + 9287947876 = 52185^2 + 96374^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011222101 - 2¹³ = 12011213909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011222107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3005320 + ... + 3009313.

It is an arithmetic number, because the mean of its divisors is an integer number (3004309683).

Almost surely, 2^12011222101 is an apocalyptic number.

It is an amenable number.

12011222101 is a deficient number, since it is larger than the sum of its proper divisors (6016631).

12011222101 is an equidigital number, since it uses as much as digits as its factorization.

12011222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016630.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12011222101 its reverse (10122211021), we get a palindrome (22133433122).

The spelling of 12011222101 in words is "twelve billion, eleven million, two hundred twenty-two thousand, one hundred one".