221122011001 has 4 divisors (see below), whose sum is σ = 232760011600. Its totient is φ = 209484010404.

The previous prime is 221122010981. The next prime is 221122011013. The reversal of 221122011001 is 100110221122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100110221122 = 2 ⋅50055110561.

It is a cyclic number.

It is not a de Polignac number, because 221122011001 - 2⁵ = 221122010969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122011401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5819000271 + ... + 5819000308.

It is an arithmetic number, because the mean of its divisors is an integer number (58190002900).

Almost surely, 2^221122011001 is an apocalyptic number.

It is an amenable number.

221122011001 is a deficient number, since it is larger than the sum of its proper divisors (11638000599).

221122011001 is a wasteful number, since it uses less digits than its factorization.

221122011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11638000598.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221122011001 its reverse (100110221122), we get a palindrome (321232232123).

The spelling of 221122011001 in words is "two hundred twenty-one billion, one hundred twenty-two million, eleven thousand, one".