12221020220101 has 32 divisors (see below), whose sum is σ = 15247844352000. Its totient is φ = 9515845510080.

The previous prime is 12221020220033. The next prime is 12221020220113. The reversal of 12221020220101 is 10102202012221.

It is a happy number.

It is not a de Polignac number, because 12221020220101 - 2³¹ = 12218872736453 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 (12221020220161) 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, 1137998190 + ... + 1138008928.

It is an arithmetic number, because the mean of its divisors is an integer number (476495136000).

Almost surely, 2^{12221020220101} is an apocalyptic number.

12221020220101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12221020220101 is a deficient number, since it is larger than the sum of its proper divisors (3026824131899).

12221020220101 is a wasteful number, since it uses less digits than its factorization.

12221020220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20289.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221020220101 its reverse (10102202012221), we get a palindrome (22323222232322).

The spelling of 12221020220101 in words is "twelve trillion, two hundred twenty-one billion, twenty million, two hundred twenty thousand, one hundred one".