221220101101 has 8 divisors (see below), whose sum is σ = 225003411360. Its totient is φ = 217437918192.

The previous prime is 221220101093. The next prime is 221220101111. The reversal of 221220101101 is 101101022122.

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 221220101101 - 2³ = 221220101093 is a prime.

It is a super-2 number, since 2×221220101101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220101111) 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, 118806 + ... + 675688.

It is an arithmetic number, because the mean of its divisors is an integer number (28125426420).

Almost surely, 2^221220101101 is an apocalyptic number.

It is an amenable number.

221220101101 is a deficient number, since it is larger than the sum of its proper divisors (3783310259).

221220101101 is an equidigital number, since it uses as much as digits as its factorization.

221220101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563675.

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

Adding to 221220101101 its reverse (101101022122), we get a palindrome (322321123223).

The spelling of 221220101101 in words is "two hundred twenty-one billion, two hundred twenty million, one hundred one thousand, one hundred one".