221022220105 has 16 divisors (see below), whose sum is σ = 280852043904. Its totient is φ = 166402620160.

The previous prime is 221022220103. The next prime is 221022220109. The reversal of 221022220105 is 501022220122.

It is not a de Polignac number, because 221022220105 - 2¹ = 221022220103 is a prime.

It is a super-2 number, since 2×221022220105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221022220103) 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, 958770 + ... + 1166740.

It is an arithmetic number, because the mean of its divisors is an integer number (17553252744).

Almost surely, 2^221022220105 is an apocalyptic number.

It is an amenable number.

221022220105 is a deficient number, since it is larger than the sum of its proper divisors (59829823799).

221022220105 is a wasteful number, since it uses less digits than its factorization.

221022220105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220496.

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 221022220105 its reverse (501022220122), we get a palindrome (722044440227).

The spelling of 221022220105 in words is "two hundred twenty-one billion, twenty-two million, two hundred twenty thousand, one hundred five".