20321222201 has 8 divisors (see below), whose sum is σ = 23308098240. Its totient is φ = 17355307248.

The previous prime is 20321222191. The next prime is 20321222261. The reversal of 20321222201 is 10222212302.

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 20321222201 - 2¹⁸ = 20320960057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20321222201.

It is not an unprimeable number, because it can be changed into a prime (20321222261) 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, 5238191 + ... + 5242068.

It is an arithmetic number, because the mean of its divisors is an integer number (2913512280).

Almost surely, 2^20321222201 is an apocalyptic number.

It is an amenable number.

20321222201 is a deficient number, since it is larger than the sum of its proper divisors (2986876039).

20321222201 is a wasteful number, since it uses less digits than its factorization.

20321222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10480543.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20321222201 its reverse (10222212302), we get a palindrome (30543434503).

The spelling of 20321222201 in words is "twenty billion, three hundred twenty-one million, two hundred twenty-two thousand, two hundred one".