221112110001 has 16 divisors (see below), whose sum is σ = 302872464000. Its totient is φ = 143382238848.

The previous prime is 221112109997. The next prime is 221112110117. The reversal of 221112110001 is 100011211122.

It is not a de Polignac number, because 221112110001 - 2² = 221112109997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221112110501) 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, 94060 + ... + 671618.

It is an arithmetic number, because the mean of its divisors is an integer number (18929529000).

Almost surely, 2^221112110001 is an apocalyptic number.

It is an amenable number.

221112110001 is a deficient number, since it is larger than the sum of its proper divisors (81760353999).

221112110001 is a wasteful number, since it uses less digits than its factorization.

221112110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581048.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221112110001 its reverse (100011211122), we get a palindrome (321123321123).

The spelling of 221112110001 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred ten thousand, one".