221122223101 has 32 divisors (see below), whose sum is σ = 244245909600. Its totient is φ = 198926966784.

The previous prime is 221122223099. The next prime is 221122223177. The reversal of 221122223101 is 101322221122.

It can be written as a sum of positive squares in 16 ways, for example, as 4617202500 + 216505020601 = 67950^2 + 465301^2 .

It is not a de Polignac number, because 221122223101 - 2¹ = 221122223099 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 (221122283101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142383141 + ... + 142384693.

It is an arithmetic number, because the mean of its divisors is an integer number (7632684675).

Almost surely, 2^221122223101 is an apocalyptic number.

It is an amenable number.

221122223101 is a deficient number, since it is larger than the sum of its proper divisors (23123686499).

221122223101 is a wasteful number, since it uses less digits than its factorization.

221122223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221122223101 its reverse (101322221122), we get a palindrome (322444444223).

The spelling of 221122223101 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-three thousand, one hundred one".