12101222211 has 32 divisors (see below), whose sum is σ = 17760798720. Its totient is φ = 7282310784.

The previous prime is 12101222209. The next prime is 12101222213. The reversal of 12101222211 is 11222210121.

It is an interprime number because it is at equal distance from previous prime (12101222209) and next prime (12101222213).

It is not a de Polignac number, because 12101222211 - 2¹ = 12101222209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12101222213) 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 31 ways as a sum of consecutive naturals, for example, 3130666 + ... + 3134528.

It is an arithmetic number, because the mean of its divisors is an integer number (555024960).

Almost surely, 2^12101222211 is an apocalyptic number.

12101222211 is a deficient number, since it is larger than the sum of its proper divisors (5659576509).

12101222211 is a wasteful number, since it uses less digits than its factorization.

12101222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12101222211 its reverse (11222210121), we get a palindrome (23323432332).

The spelling of 12101222211 in words is "twelve billion, one hundred one million, two hundred twenty-two thousand, two hundred eleven".