221102111108 has 6 divisors (see below), whose sum is σ = 386928694446. Its totient is φ = 110551055552.

The previous prime is 221102111101. The next prime is 221102111137. The reversal of 221102111108 is 801111201122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 171568267264 + 49533843844 = 414208^2 + 222562^2 .

It is a super-2 number, since 2×221102111108² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221102111108.

It is not an unprimeable number, because it can be changed into a prime (221102111101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27637763885 + ... + 27637763892.

It is an arithmetic number, because the mean of its divisors is an integer number (64488115741).

Almost surely, 2^221102111108 is an apocalyptic number.

It is an amenable number.

221102111108 is a deficient number, since it is larger than the sum of its proper divisors (165826583338).

221102111108 is a wasteful number, since it uses less digits than its factorization.

221102111108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55275527781 (or 55275527779 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

The spelling of 221102111108 in words is "two hundred twenty-one billion, one hundred two million, one hundred eleven thousand, one hundred eight".