210223133021 has 4 divisors (see below), whose sum is σ = 229334326944. Its totient is φ = 191111939100.

The previous prime is 210223133017. The next prime is 210223133023. The reversal of 210223133021 is 120331322012.

210223133021 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 210223133021 - 2² = 210223133017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210223132984 and 210223133002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210223133023) 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, 9555596945 + ... + 9555596966.

It is an arithmetic number, because the mean of its divisors is an integer number (57333581736).

Almost surely, 2^210223133021 is an apocalyptic number.

It is an amenable number.

210223133021 is a deficient number, since it is larger than the sum of its proper divisors (19111193923).

210223133021 is a wasteful number, since it uses less digits than its factorization.

210223133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19111193922.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 210223133021 its reverse (120331322012), we get a palindrome (330554455033).

The spelling of 210223133021 in words is "two hundred ten billion, two hundred twenty-three million, one hundred thirty-three thousand, twenty-one".