221122122001 has 8 divisors (see below), whose sum is σ = 241415748000. Its totient is φ = 200860431840.

The previous prime is 221122121981. The next prime is 221122122007. The reversal of 221122122001 is 100221221122.

It is a happy number.

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-221122122001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122122007) 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, 7969476 + ... + 7997173.

It is an arithmetic number, because the mean of its divisors is an integer number (30176968500).

Almost surely, 2^221122122001 is an apocalyptic number.

It is an amenable number.

221122122001 is a deficient number, since it is larger than the sum of its proper divisors (20293625999).

221122122001 is a wasteful number, since it uses less digits than its factorization.

221122122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15967919.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221122122001 its reverse (100221221122), we get a palindrome (321343343123).

The spelling of 221122122001 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, one".