12100221212011 has 4 divisors (see below), whose sum is σ = 12101874029224. Its totient is φ = 12098568394800.

The previous prime is 12100221211951. The next prime is 12100221212083. The reversal of 12100221212011 is 11021212200121.

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

It is a cyclic number.

It is not a de Polignac number, because 12100221212011 - 2²³ = 12100212823403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12100221212411) 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, 826397625 + ... + 826412266.

It is an arithmetic number, because the mean of its divisors is an integer number (3025468507306).

Almost surely, 2^{12100221212011} is an apocalyptic number.

12100221212011 is a deficient number, since it is larger than the sum of its proper divisors (1652817213).

12100221212011 is an equidigital number, since it uses as much as digits as its factorization.

12100221212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652817212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12100221212011 its reverse (11021212200121), we get a palindrome (23121433412132).

The spelling of 12100221212011 in words is "twelve trillion, one hundred billion, two hundred twenty-one million, two hundred twelve thousand, eleven".