22121220012101 has 16 divisors (see below), whose sum is σ = 26612646188160. Its totient is φ = 17962655722560.

The previous prime is 22121220012079. The next prime is 22121220012103. The reversal of 22121220012101 is 10121002212122.

It is a cyclic number.

It is not a de Polignac number, because 22121220012101 - 2²² = 22121215817797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121220012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121220012103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3464915 + ... + 7499871.

It is an arithmetic number, because the mean of its divisors is an integer number (1663290386760).

Almost surely, 2^{22121220012101} is an apocalyptic number.

It is an amenable number.

22121220012101 is a deficient number, since it is larger than the sum of its proper divisors (4491426176059).

22121220012101 is a wasteful number, since it uses less digits than its factorization.

22121220012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076204.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22121220012101 its reverse (10121002212122), we get a palindrome (32242222224223).

The spelling of 22121220012101 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, twelve thousand, one hundred one".