201022122021 has 16 divisors (see below), whose sum is σ = 306767937024. Its totient is φ = 114701591664.

The previous prime is 201022122001. The next prime is 201022122061. The reversal of 201022122021 is 120221220102.

201022122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201022122021 - 2⁷ = 201022121893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022122001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6993331 + ... + 7022016.

It is an arithmetic number, because the mean of its divisors is an integer number (19172996064).

Almost surely, 2^201022122021 is an apocalyptic number.

201022122021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201022122021 is a deficient number, since it is larger than the sum of its proper divisors (105745815003).

201022122021 is a wasteful number, since it uses less digits than its factorization.

201022122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14016040.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201022122021 its reverse (120221220102), we get a palindrome (321243342123).

The spelling of 201022122021 in words is "two hundred one billion, twenty-two million, one hundred twenty-two thousand, twenty-one".