221101220222101 has 8 divisors (see below), whose sum is σ = 232894012799520. Its totient is φ = 209324016269712.

The previous prime is 221101220222083. The next prime is 221101220222117. The reversal of 221101220222101 is 101222022101122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221101220222101 - 2²³ = 221101211833493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221101220222501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3897127135 + ... + 3897183868.

It is an arithmetic number, because the mean of its divisors is an integer number (29111751599940).

Almost surely, 2^{221101220222101} is an apocalyptic number.

It is an amenable number.

221101220222101 is a deficient number, since it is larger than the sum of its proper divisors (11792792577419).

221101220222101 is a wasteful number, since it uses less digits than its factorization.

221101220222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7794312515.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221101220222101 its reverse (101222022101122), we get a palindrome (322323242323223).

The spelling of 221101220222101 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twenty million, two hundred twenty-two thousand, one hundred one".