201220002011021 has 16 divisors (see below), whose sum is σ = 230020849618560. Its totient is φ = 172432941808320.

The previous prime is 201220002011011. The next prime is 201220002011071. The reversal of 201220002011021 is 120110200022102.

It is a cyclic number.

It is not a de Polignac number, because 201220002011021 - 2¹⁸ = 201220001748877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201220002010987 and 201220002011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220002011011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619821275 + ... + 620145831.

It is an arithmetic number, because the mean of its divisors is an integer number (14376303101160).

Almost surely, 2^{201220002011021} is an apocalyptic number.

It is an amenable number.

201220002011021 is a deficient number, since it is larger than the sum of its proper divisors (28800847607539).

201220002011021 is a wasteful number, since it uses less digits than its factorization.

201220002011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345524.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201220002011021 its reverse (120110200022102), we get a palindrome (321330202033123).

The spelling of 201220002011021 in words is "two hundred one trillion, two hundred twenty billion, two million, eleven thousand, twenty-one".