221120111110001 has 16 divisors (see below), whose sum is σ = 223595889021120. Its totient is φ = 218657116569600.

The previous prime is 221120111109979. The next prime is 221120111110009. The reversal of 221120111110001 is 100011111021122.

It is a cyclic number.

It is not a de Polignac number, because 221120111110001 - 2³⁴ = 221102931240817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120111110009) 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, 444538505 + ... + 445035641.

It is an arithmetic number, because the mean of its divisors is an integer number (13974743063820).

Almost surely, 2^{221120111110001} is an apocalyptic number.

It is an amenable number.

221120111110001 is a deficient number, since it is larger than the sum of its proper divisors (2475777911119).

221120111110001 is a wasteful number, since it uses less digits than its factorization.

221120111110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509984.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 221120111110001 its reverse (100011111021122), we get a palindrome (321131222131123).

The spelling of 221120111110001 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred eleven million, one hundred ten thousand, one".