12211100101 has 4 divisors (see below), whose sum is σ = 12853789600. Its totient is φ = 11568410604.

The previous prime is 12211100009. The next prime is 12211100147. The reversal of 12211100101 is 10100111221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10100111221 = 83 ⋅121688087.

It is not a de Polignac number, because 12211100101 - 2²⁷ = 12076882373 is a prime.

It is a super-2 number, since 2×12211100101² (a number of 21 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 (12211100191) 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, 321344721 + ... + 321344758.

It is an arithmetic number, because the mean of its divisors is an integer number (3213447400).

Almost surely, 2^12211100101 is an apocalyptic number.

It is an amenable number.

12211100101 is a deficient number, since it is larger than the sum of its proper divisors (642689499).

12211100101 is an equidigital number, since it uses as much as digits as its factorization.

12211100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642689498.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12211100101 its reverse (10100111221), we get a palindrome (22311211322).

The spelling of 12211100101 in words is "twelve billion, two hundred eleven million, one hundred thousand, one hundred one".