2021201222001 has 16 divisors (see below), whose sum is σ = 2906377830720. Its totient is φ = 1242041774400.

The previous prime is 2021201221979. The next prime is 2021201222009. The reversal of 2021201222001 is 1002221021202.

It is not a de Polignac number, because 2021201222001 - 2⁶ = 2021201221937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021201222009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36938191 + ... + 36992868.

It is an arithmetic number, because the mean of its divisors is an integer number (181648614420).

Almost surely, 2^{2021201222001} is an apocalyptic number.

It is an amenable number.

2021201222001 is a deficient number, since it is larger than the sum of its proper divisors (885176608719).

2021201222001 is a wasteful number, since it uses less digits than its factorization.

2021201222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73931776.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2021201222001 its reverse (1002221021202), we get a palindrome (3023422243203).

The spelling of 2021201222001 in words is "two trillion, twenty-one billion, two hundred one million, two hundred twenty-two thousand, one".