213021266253 has 8 divisors (see below), whose sum is σ = 284060051616. Its totient is φ = 141998329200.

The previous prime is 213021266231. The next prime is 213021266279. The reversal of 213021266253 is 352662120312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213021266253 - 2¹⁷ = 213021135181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213021267253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3930678 + ... + 3984503.

It is an arithmetic number, because the mean of its divisors is an integer number (35507506452).

Almost surely, 2^213021266253 is an apocalyptic number.

It is an amenable number.

213021266253 is a deficient number, since it is larger than the sum of its proper divisors (71038785363).

213021266253 is an equidigital number, since it uses as much as digits as its factorization.

213021266253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7924155.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 213021266253 its reverse (352662120312), we get a palindrome (565683386565).

The spelling of 213021266253 in words is "two hundred thirteen billion, twenty-one million, two hundred sixty-six thousand, two hundred fifty-three".