22001001100221 has 64 divisors (see below), whose sum is σ = 36077139431424. Its totient is φ = 11735253657600.

The previous prime is 22001001100207. The next prime is 22001001100223. The reversal of 22001001100221 is 12200110010022.

It is not a de Polignac number, because 22001001100221 - 2²³ = 22000992711613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22001001100197 and 22001001100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001001100223) 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, 516180 + ... + 6653453.

It is an arithmetic number, because the mean of its divisors is an integer number (563705303616).

Almost surely, 2^{22001001100221} is an apocalyptic number.

It is an amenable number.

22001001100221 is a deficient number, since it is larger than the sum of its proper divisors (14076138331203).

22001001100221 is a wasteful number, since it uses less digits than its factorization.

22001001100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7169994.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22001001100221 its reverse (12200110010022), we get a palindrome (34201111110243).

The spelling of 22001001100221 in words is "twenty-two trillion, one billion, one million, one hundred thousand, two hundred twenty-one".