21020222112201 has 48 divisors (see below), whose sum is σ = 32733368006976. Its totient is φ = 12921584531328.

The previous prime is 21020222112187. The next prime is 21020222112247. The reversal of 21020222112201 is 10221122202012.

It is a happy number.

21020222112201 is a `hidden beast` number, since 21 + 0 + 202 + 221 + 1 + 220 + 1 = 666.

It is not a de Polignac number, because 21020222112201 - 2¹⁵ = 21020222079433 is a prime.

It is a super-3 number, since 3×21020222112201³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21020222119201) 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 47 ways as a sum of consecutive naturals, for example, 551939106 + ... + 551977188.

It is an arithmetic number, because the mean of its divisors is an integer number (681945166812).

Almost surely, 2^{21020222112201} is an apocalyptic number.

It is an amenable number.

21020222112201 is a deficient number, since it is larger than the sum of its proper divisors (11713145894775).

21020222112201 is a wasteful number, since it uses less digits than its factorization.

21020222112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43062 (or 43059 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21020222112201 its reverse (10221122202012), we get a palindrome (31241344314213).

The spelling of 21020222112201 in words is "twenty-one trillion, twenty billion, two hundred twenty-two million, one hundred twelve thousand, two hundred one".