221102111109 has 16 divisors (see below), whose sum is σ = 321944883264. Its totient is φ = 133858857600.

The previous prime is 221102111101. The next prime is 221102111137. The reversal of 221102111109 is 901111201122.

It is not a de Polignac number, because 221102111109 - 2³ = 221102111101 is a prime.

It is a super-2 number, since 2×221102111109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 3529024 + ... + 3591129.

It is an arithmetic number, because the mean of its divisors is an integer number (20121555204).

Almost surely, 2^221102111109 is an apocalyptic number.

It is an amenable number.

221102111109 is a deficient number, since it is larger than the sum of its proper divisors (100842772155).

221102111109 is a wasteful number, since it uses less digits than its factorization.

221102111109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121108.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 221102111109 in words is "two hundred twenty-one billion, one hundred two million, one hundred eleven thousand, one hundred nine".