22001201002221 has 16 divisors (see below), whose sum is σ = 33750643920000. Its totient is φ = 12487738246848.

The previous prime is 22001201002147. The next prime is 22001201002271. The reversal of 22001201002221 is 12220010210022.

It is not a de Polignac number, because 22001201002221 - 2⁹ = 22001201001709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22001201002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001201002271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3515688946 + ... + 3515695203.

It is an arithmetic number, because the mean of its divisors is an integer number (2109415245000).

Almost surely, 2^{22001201002221} is an apocalyptic number.

22001201002221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22001201002221 is a deficient number, since it is larger than the sum of its proper divisors (11749442917779).

22001201002221 is a wasteful number, since it uses less digits than its factorization.

22001201002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031384308.

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

Adding to 22001201002221 its reverse (12220010210022), we get a palindrome (34221211212243).

The spelling of 22001201002221 in words is "twenty-two trillion, one billion, two hundred one million, two thousand, two hundred twenty-one".