12222121221101 has 8 divisors (see below), whose sum is σ = 13335827865600. Its totient is φ = 11108848695840.

The previous prime is 12222121221073. The next prime is 12222121221179. The reversal of 12222121221101 is 10112212122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12222121221101 - 2³⁴ = 12204941351917 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 (12222121226101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108470936 + ... + 108583553.

It is an arithmetic number, because the mean of its divisors is an integer number (1666978483200).

Almost surely, 2^{12222121221101} is an apocalyptic number.

12222121221101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12222121221101 is a deficient number, since it is larger than the sum of its proper divisors (1113706644499).

12222121221101 is a wasteful number, since it uses less digits than its factorization.

12222121221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217059619.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12222121221101 its reverse (10112212122221), we get a palindrome (22334333343322).

The spelling of 12222121221101 in words is "twelve trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred one".