201022201212021 has 24 divisors (see below), whose sum is σ = 351366536574144. Its totient is φ = 108112780483200.

The previous prime is 201022201212011. The next prime is 201022201212101. The reversal of 201022201212021 is 120212102220102.

It is a happy number.

201022201212021 is a `hidden beast` number, since 20 + 102 + 220 + 121 + 202 + 1 = 666.

It is not a de Polignac number, because 201022201212021 - 2⁵ = 201022201211989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201022201211985 and 201022201212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022201212011) 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 23 ways as a sum of consecutive naturals, for example, 93847898655 + ... + 93847900796.

It is an arithmetic number, because the mean of its divisors is an integer number (14640272357256).

Almost surely, 2^{201022201212021} is an apocalyptic number.

201022201212021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201022201212021 is a deficient number, since it is larger than the sum of its proper divisors (150344335362123).

201022201212021 is a wasteful number, since it uses less digits than its factorization.

201022201212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187695799481 (or 187695799478 counting only the distinct ones).

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

Adding to 201022201212021 its reverse (120212102220102), we get a palindrome (321234303432123).

The spelling of 201022201212021 in words is "two hundred one trillion, twenty-two billion, two hundred one million, two hundred twelve thousand, twenty-one".