203122222021 has 16 divisors (see below), whose sum is σ = 206768701440. Its totient is φ = 199505576880.

The previous prime is 203122221937. The next prime is 203122222027. The reversal of 203122222021 is 120222221302.

203122222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 203122222021 - 2¹⁷ = 203122090949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203122222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203122222027) 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, 39677500 + ... + 39682618.

It is an arithmetic number, because the mean of its divisors is an integer number (12923043840).

Almost surely, 2^203122222021 is an apocalyptic number.

It is an amenable number.

203122222021 is a deficient number, since it is larger than the sum of its proper divisors (3646479419).

203122222021 is a wasteful number, since it uses less digits than its factorization.

203122222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 203122222021 its reverse (120222221302), we get a palindrome (323344443323).

The spelling of 203122222021 in words is "two hundred three billion, one hundred twenty-two million, two hundred twenty-two thousand, twenty-one".