210022213021 has 4 divisors (see below), whose sum is σ = 210039368544. Its totient is φ = 210005057500.

The previous prime is 210022212997. The next prime is 210022213031. The reversal of 210022213021 is 120312220012.

It is a happy number.

210022213021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210022213021 - 2⁵ = 210022212989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210022212986 and 210022213004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210022213031) 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 3 ways as a sum of consecutive naturals, for example, 8559385 + ... + 8583886.

It is an arithmetic number, because the mean of its divisors is an integer number (52509842136).

Almost surely, 2^210022213021 is an apocalyptic number.

It is an amenable number.

210022213021 is a deficient number, since it is larger than the sum of its proper divisors (17155523).

210022213021 is a wasteful number, since it uses less digits than its factorization.

210022213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17155522.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 210022213021 its reverse (120312220012), we get a palindrome (330334433033).

The spelling of 210022213021 in words is "two hundred ten billion, twenty-two million, two hundred thirteen thousand, twenty-one".