12221022121101 has 24 divisors (see below), whose sum is σ = 17761100138496. Its totient is φ = 8097342689760.

The previous prime is 12221022121081. The next prime is 12221022121127. The reversal of 12221022121101 is 10112122012221.

12221022121101 is a `hidden beast` number, since 1 + 22 + 210 + 221 + 211 + 0 + 1 = 666.

It is not a de Polignac number, because 12221022121101 - 2³⁵ = 12186662382733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221022121141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1326690 + ... + 5118803.

It is an arithmetic number, because the mean of its divisors is an integer number (740045839104).

Almost surely, 2^{12221022121101} is an apocalyptic number.

It is an amenable number.

12221022121101 is a deficient number, since it is larger than the sum of its proper divisors (5540078017395).

12221022121101 is a wasteful number, since it uses less digits than its factorization.

12221022121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446793 (or 6446790 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12221022121101 its reverse (10112122012221), we get a palindrome (22333144133322).

The spelling of 12221022121101 in words is "twelve trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, one hundred one".