22121220202001 has 8 divisors (see below), whose sum is σ = 22157333827584. Its totient is φ = 22085109920160.

The previous prime is 22121220201961. The next prime is 22121220202121. The reversal of 22121220202001 is 10020202212122.

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 not a de Polignac number, because 22121220202001 - 2⁶ = 22121220201937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22121220201001) 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, 12581861 + ... + 14231853.

It is an arithmetic number, because the mean of its divisors is an integer number (2769666728448).

Almost surely, 2^{22121220202001} is an apocalyptic number.

It is an amenable number.

22121220202001 is a deficient number, since it is larger than the sum of its proper divisors (36113625583).

22121220202001 is a wasteful number, since it uses less digits than its factorization.

22121220202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671871.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22121220202001 its reverse (10020202212122), we get a palindrome (32141422414123).

The spelling of 22121220202001 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred two thousand, one".