221122222101001 has 64 divisors (see below), whose sum is σ = 255767268556800. Its totient is φ = 189365477446656.

The previous prime is 221122222100999. The next prime is 221122222101029. The reversal of 221122222101001 is 100101222221122.

It is a cyclic number.

It is not a de Polignac number, because 221122222101001 - 2¹ = 221122222100999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221122222101001.

It is not an unprimeable number, because it can be changed into a prime (221122222101061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2797594840 + ... + 2797673878.

It is an arithmetic number, because the mean of its divisors is an integer number (3996363571200).

Almost surely, 2^{221122222101001} is an apocalyptic number.

It is an amenable number.

221122222101001 is a deficient number, since it is larger than the sum of its proper divisors (34645046455799).

221122222101001 is a wasteful number, since it uses less digits than its factorization.

221122222101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79838.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221122222101001 its reverse (100101222221122), we get a palindrome (321223444322123).

The spelling of 221122222101001 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred one thousand, one".