210210022021 has 16 divisors (see below), whose sum is σ = 230467507200. Its totient is φ = 190842317568.

The previous prime is 210210022019. The next prime is 210210022037. The reversal of 210210022021 is 120220012012.

It is a happy number.

210210022021 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 210210022021 - 2¹ = 210210022019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210210021992 and 210210022010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210210022081) 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, 323500 + ... + 724618.

It is an arithmetic number, because the mean of its divisors is an integer number (14404219200).

Almost surely, 2^210210022021 is an apocalyptic number.

It is an amenable number.

210210022021 is a deficient number, since it is larger than the sum of its proper divisors (20257485179).

210210022021 is a wasteful number, since it uses less digits than its factorization.

210210022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402228.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210210022021 its reverse (120220012012), we get a palindrome (330430034033).

The spelling of 210210022021 in words is "two hundred ten billion, two hundred ten million, twenty-two thousand, twenty-one".