12221211010101 has 32 divisors (see below), whose sum is σ = 16788140906880. Its totient is φ = 7902297667584.

The previous prime is 12221211010007. The next prime is 12221211010103. The reversal of 12221211010101 is 10101011212221.

It is a happy number.

It is not a de Polignac number, because 12221211010101 - 2⁹ = 12221211009589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221211010103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57232590 + ... + 57445728.

It is an arithmetic number, because the mean of its divisors is an integer number (524629403340).

Almost surely, 2^{12221211010101} is an apocalyptic number.

It is an amenable number.

12221211010101 is a deficient number, since it is larger than the sum of its proper divisors (4566929896779).

12221211010101 is a wasteful number, since it uses less digits than its factorization.

12221211010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214805.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12221211010101 its reverse (10101011212221), we get a palindrome (22322222222322).

The spelling of 12221211010101 in words is "twelve trillion, two hundred twenty-one billion, two hundred eleven million, ten thousand, one hundred one".