20221211122201 has 8 divisors (see below), whose sum is σ = 20233358747784. Its totient is φ = 20209063962240.

The previous prime is 20221211122169. The next prime is 20221211122207. The reversal of 20221211122201 is 10222111212202.

It can be written as a sum of positive squares in 4 ways, for example, as 10179290250000 + 10041920872201 = 3190500^2 + 3168899^2 .

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 20221211122201 - 2⁵ = 20221211122169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221211122207) 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 7 ways as a sum of consecutive naturals, for example, 129914515 + ... + 130070071.

It is an arithmetic number, because the mean of its divisors is an integer number (2529169843473).

Almost surely, 2^{20221211122201} is an apocalyptic number.

It is an amenable number.

20221211122201 is a deficient number, since it is larger than the sum of its proper divisors (12147625583).

20221211122201 is a wasteful number, since it uses less digits than its factorization.

20221211122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232811.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20221211122201 its reverse (10222111212202), we get a palindrome (30443322334403).

Subtracting from 20221211122201 its reverse (10222111212202), we obtain a palindrome (9999099909999).

The spelling of 20221211122201 in words is "twenty trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty-two thousand, two hundred one".