20222121202201 has 4 divisors (see below), whose sum is σ = 20232147045172. Its totient is φ = 20212095359232.

The previous prime is 20222121202187. The next prime is 20222121202211. The reversal of 20222121202201 is 10220212122202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19049069746576 + 1173051455625 = 4364524^2 + 1083075^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222121202201 - 2⁵ = 20222121202169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20222121202211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5012918460 + ... + 5012922493.

It is an arithmetic number, because the mean of its divisors is an integer number (5058036761293).

Almost surely, 2^{20222121202201} is an apocalyptic number.

It is an amenable number.

20222121202201 is a deficient number, since it is larger than the sum of its proper divisors (10025842971).

20222121202201 is a wasteful number, since it uses less digits than its factorization.

20222121202201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10025842970.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20222121202201 its reverse (10220212122202), we get a palindrome (30442333324403).

The spelling of 20222121202201 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred two thousand, two hundred one".