221100200212101 has 128 divisors (see below), whose sum is σ = 356375624417280. Its totient is φ = 119287463097600.

The previous prime is 221100200212097. The next prime is 221100200212109. The reversal of 221100200212101 is 101212002001122.

221100200212101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221100200212101 - 2² = 221100200212097 is a prime.

It is a super-2 number, since 2×221100200212101² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100200212109) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2283407650 + ... + 2283504476.

It is an arithmetic number, because the mean of its divisors is an integer number (2784184565760).

Almost surely, 2^{221100200212101} is an apocalyptic number.

221100200212101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221100200212101 is a deficient number, since it is larger than the sum of its proper divisors (135275424205179).

221100200212101 is a wasteful number, since it uses less digits than its factorization.

221100200212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97455.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221100200212101 its reverse (101212002001122), we get a palindrome (322312202213223).

The spelling of 221100200212101 in words is "two hundred twenty-one trillion, one hundred billion, two hundred million, two hundred twelve thousand, one hundred one".