21220101122201 has 8 divisors (see below), whose sum is σ = 21243218008320. Its totient is φ = 21196994888512.

The previous prime is 21220101122183. The next prime is 21220101122237. The reversal of 21220101122201 is 10222110102212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21220101122201 - 2⁶ = 21220101122137 is a prime.

It is a super-3 number, since 3×21220101122201³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21220101122201.

It is not an unprimeable number, because it can be changed into a prime (21220101122501) 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, 1326401 + ... + 6648273.

It is an arithmetic number, because the mean of its divisors is an integer number (2655402251040).

Almost surely, 2^{21220101122201} is an apocalyptic number.

It is an amenable number.

21220101122201 is a deficient number, since it is larger than the sum of its proper divisors (23116886119).

21220101122201 is a wasteful number, since it uses less digits than its factorization.

21220101122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326215.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21220101122201 its reverse (10222110102212), we get a palindrome (31442211224413).

The spelling of 21220101122201 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, one hundred twenty-two thousand, two hundred one".