12211210101 has 4 divisors (see below), whose sum is σ = 16281613472. Its totient is φ = 8140806732.

The previous prime is 12211210057. The next prime is 12211210103. The reversal of 12211210101 is 10101211221.

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.

It is not a de Polignac number, because 12211210101 - 2¹⁰ = 12211209077 is a prime.

It is a super-2 number, since 2×12211210101² (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 (12211210103) 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, 2035201681 + ... + 2035201686.

It is an arithmetic number, because the mean of its divisors is an integer number (4070403368).

Almost surely, 2^12211210101 is an apocalyptic number.

It is an amenable number.

12211210101 is a deficient number, since it is larger than the sum of its proper divisors (4070403371).

12211210101 is an equidigital number, since it uses as much as digits as its factorization.

12211210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070403370.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12211210101 its reverse (10101211221), we get a palindrome (22312421322).

The spelling of 12211210101 in words is "twelve billion, two hundred eleven million, two hundred ten thousand, one hundred one".