201220020222021 has 12 divisors (see below), whose sum is σ = 291090854611180. Its totient is φ = 133943735090880.

The previous prime is 201220020221933. The next prime is 201220020222103. The reversal of 201220020222021 is 120222020022102.

201220020222021 is a `hidden beast` number, since 2 + 0 + 1 + 220 + 0 + 202 + 220 + 21 = 666.

201220020222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 187293047105025 + 13926973116996 = 13685505^2 + 3731886^2 .

It is not a de Polignac number, because 201220020222021 - 2⁷ = 201220020221893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201220020221985 and 201220020222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220020222421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16912081816 + ... + 16912093713.

Almost surely, 2^{201220020222021} is an apocalyptic number.

It is an amenable number.

201220020222021 is a deficient number, since it is larger than the sum of its proper divisors (89870834389159).

201220020222021 is a wasteful number, since it uses less digits than its factorization.

201220020222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33824176196 (or 33824176193 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 201220020222021 its reverse (120222020022102), we get a palindrome (321442040244123).

The spelling of 201220020222021 in words is "two hundred one trillion, two hundred twenty billion, twenty million, two hundred twenty-two thousand, twenty-one".