221111220022001 has 8 divisors (see below), whose sum is σ = 221955818367360. Its totient is φ = 220266651004992.

The previous prime is 221111220021959. The next prime is 221111220022067. The reversal of 221111220022001 is 100220022111122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221111220022001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221111220022501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7834841 + ... + 22441193.

It is an arithmetic number, because the mean of its divisors is an integer number (27744477295920).

Almost surely, 2^{221111220022001} is an apocalyptic number.

It is an amenable number.

221111220022001 is a deficient number, since it is larger than the sum of its proper divisors (844598345359).

221111220022001 is a wasteful number, since it uses less digits than its factorization.

221111220022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14664175.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221111220022001 its reverse (100220022111122), we get a palindrome (321331242133123).

The spelling of 221111220022001 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred twenty million, twenty-two thousand, one".