201222020020021 has 32 divisors (see below), whose sum is σ = 272847195323136. Its totient is φ = 143302098240000.

The previous prime is 201222020019991. The next prime is 201222020020037. The reversal of 201222020020021 is 120020020222102.

It is not a de Polignac number, because 201222020020021 - 2¹³ = 201222020011829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201222020019977 and 201222020020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222020020121) 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 31 ways as a sum of consecutive naturals, for example, 995052360 + ... + 995254561.

It is an arithmetic number, because the mean of its divisors is an integer number (8526474853848).

Almost surely, 2^{201222020020021} is an apocalyptic number.

It is an amenable number.

201222020020021 is a deficient number, since it is larger than the sum of its proper divisors (71625175303115).

201222020020021 is a wasteful number, since it uses less digits than its factorization.

201222020020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990307053.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201222020020021 its reverse (120020020222102), we get a palindrome (321242040242123).

It can be divided in two parts, 201 and 222020020021, that added together give a palindrome (222020020222).

The spelling of 201222020020021 in words is "two hundred one trillion, two hundred twenty-two billion, twenty million, twenty thousand, twenty-one".