221122112101 has 16 divisors (see below), whose sum is σ = 241656105600. Its totient is φ = 200660359680.

The previous prime is 221122112087. The next prime is 221122112153. The reversal of 221122112101 is 101211221122.

It is not a de Polignac number, because 221122112101 - 2¹⁵ = 221122079333 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 (221122112161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27577645 + ... + 27585661.

It is an arithmetic number, because the mean of its divisors is an integer number (15103506600).

Almost surely, 2^221122112101 is an apocalyptic number.

It is an amenable number.

221122112101 is a deficient number, since it is larger than the sum of its proper divisors (20533993499).

221122112101 is a wasteful number, since it uses less digits than its factorization.

221122112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12204.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221122112101 its reverse (101211221122), we get a palindrome (322333333223).

The spelling of 221122112101 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred one".