212103133313 has 4 divisors (see below), whose sum is σ = 212402292180. Its totient is φ = 211803974448.

The previous prime is 212103133279. The next prime is 212103133337. The reversal of 212103133313 is 313331301212.

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 37532087824 + 174571045489 = 193732^2 + 417817^2 .

It is a cyclic number.

It is not a de Polignac number, because 212103133313 - 2³² = 207808166017 is a prime.

It is a super-2 number, since 2×212103133313² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212103133373) 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, 149578370 + ... + 149579787.

It is an arithmetic number, because the mean of its divisors is an integer number (53100573045).

Almost surely, 2^212103133313 is an apocalyptic number.

It is an amenable number.

212103133313 is a deficient number, since it is larger than the sum of its proper divisors (299158867).

212103133313 is an equidigital number, since it uses as much as digits as its factorization.

212103133313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299158866.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 212103133313 its reverse (313331301212), we get a palindrome (525434434525).

The spelling of 212103133313 in words is "two hundred twelve billion, one hundred three million, one hundred thirty-three thousand, three hundred thirteen".