212005051253 has 4 divisors (see below), whose sum is σ = 212009264940. Its totient is φ = 212000837568.

The previous prime is 212005051217. The next prime is 212005051259. The reversal of 212005051253 is 352150500212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105535319044 + 106469732209 = 324862^2 + 326297^2 .

It is a cyclic number.

It is not a de Polignac number, because 212005051253 - 2⁸ = 212005050997 is a prime.

It is a super-2 number, since 2×212005051253² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212005051259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2030450 + ... + 2132307.

It is an arithmetic number, because the mean of its divisors is an integer number (53002316235).

Almost surely, 2^212005051253 is an apocalyptic number.

It is an amenable number.

212005051253 is a deficient number, since it is larger than the sum of its proper divisors (4213687).

212005051253 is an equidigital number, since it uses as much as digits as its factorization.

212005051253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213686.

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 212005051253 its reverse (352150500212), we get a palindrome (564155551465).

The spelling of 212005051253 in words is "two hundred twelve billion, five million, fifty-one thousand, two hundred fifty-three".