221220011101 has 8 divisors (see below), whose sum is σ = 233907403520. Its totient is φ = 208637042112.

The previous prime is 221220011081. The next prime is 221220011113. The reversal of 221220011101 is 101110022122.

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 221220011101 - 2²⁹ = 220683140189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220014101) 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, 26101500 + ... + 26109973.

It is an arithmetic number, because the mean of its divisors is an integer number (29238425440).

Almost surely, 2^221220011101 is an apocalyptic number.

It is an amenable number.

221220011101 is a deficient number, since it is larger than the sum of its proper divisors (12687392419).

221220011101 is a wasteful number, since it uses less digits than its factorization.

221220011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52211715.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221220011101 its reverse (101110022122), we get a palindrome (322330033223).

The spelling of 221220011101 in words is "two hundred twenty-one billion, two hundred twenty million, eleven thousand, one hundred one".