212120030013 has 4 divisors (see below), whose sum is σ = 282826706688. Its totient is φ = 141413353340.

The previous prime is 212120029987. The next prime is 212120030053. The reversal of 212120030013 is 310030021212.

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 212120030013 - 2⁵ = 212120029981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212120029974 and 212120030001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120030053) 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, 35353338333 + ... + 35353338338.

It is an arithmetic number, because the mean of its divisors is an integer number (70706676672).

Almost surely, 2^212120030013 is an apocalyptic number.

It is an amenable number.

212120030013 is a deficient number, since it is larger than the sum of its proper divisors (70706676675).

212120030013 is an equidigital number, since it uses as much as digits as its factorization.

212120030013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70706676674.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 212120030013 its reverse (310030021212), we get a palindrome (522150051225).

The spelling of 212120030013 in words is "two hundred twelve billion, one hundred twenty million, thirty thousand, thirteen".