221122211001 has 16 divisors (see below), whose sum is σ = 304383341568. Its totient is φ = 142679664000.

The previous prime is 221122210999. The next prime is 221122211029. The reversal of 221122211001 is 100112221122.

It is not a de Polignac number, because 221122211001 - 2¹ = 221122210999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221122215001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5193700 + ... + 5236101.

It is an arithmetic number, because the mean of its divisors is an integer number (19023958848).

Almost surely, 2^221122211001 is an apocalyptic number.

It is an amenable number.

221122211001 is a deficient number, since it is larger than the sum of its proper divisors (83261130567).

221122211001 is a wasteful number, since it uses less digits than its factorization.

221122211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10430032.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221122211001 its reverse (100112221122), we get a palindrome (321234432123).

The spelling of 221122211001 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred eleven thousand, one".