221022122001 has 32 divisors (see below), whose sum is σ = 312309043200. Its totient is φ = 138836068800.

The previous prime is 221022121993. The next prime is 221022122003. The reversal of 221022122001 is 100221220122.

It is not a de Polignac number, because 221022122001 - 2³ = 221022121993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221022122003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 474550 + ... + 816848.

It is an arithmetic number, because the mean of its divisors is an integer number (9759657600).

Almost surely, 2^221022122001 is an apocalyptic number.

It is an amenable number.

221022122001 is a deficient number, since it is larger than the sum of its proper divisors (91286921199).

221022122001 is a wasteful number, since it uses less digits than its factorization.

221022122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342517.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221022122001 its reverse (100221220122), we get a palindrome (321243342123).

The spelling of 221022122001 in words is "two hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, one".