22100221212101 has 24 divisors (see below), whose sum is σ = 24181378006464. Its totient is φ = 20180289648960.

The previous prime is 22100221212073. The next prime is 22100221212169. The reversal of 22100221212101 is 10121212200122.

It is a de Polignac number, because none of the positive numbers 2^k-22100221212101 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 22100221212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100221212401) 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, 7766441 + ... + 10223406.

It is an arithmetic number, because the mean of its divisors is an integer number (1007557416936).

Almost surely, 2^{22100221212101} is an apocalyptic number.

It is an amenable number.

22100221212101 is a deficient number, since it is larger than the sum of its proper divisors (2081156794363).

22100221212101 is a wasteful number, since it uses less digits than its factorization.

22100221212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17990009 (or 17989990 counting only the distinct ones).

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

Adding to 22100221212101 its reverse (10121212200122), we get a palindrome (32221433412223).

The spelling of 22100221212101 in words is "twenty-two trillion, one hundred billion, two hundred twenty-one million, two hundred twelve thousand, one hundred one".