212620013 has 4 divisors (see below), whose sum is σ = 223810560. Its totient is φ = 201429468.

The previous prime is 212620007. The next prime is 212620061. The reversal of 212620013 is 310026212.

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 212620013 - 2⁴ = 212619997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212619973 and 212620000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212620813) 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, 5595245 + ... + 5595282.

It is an arithmetic number, because the mean of its divisors is an integer number (55952640).

Almost surely, 2^212620013 is an apocalyptic number.

It is an amenable number.

212620013 is a deficient number, since it is larger than the sum of its proper divisors (11190547).

212620013 is a wasteful number, since it uses less digits than its factorization.

212620013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11190546.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 212620013 is about 14581.4955680136. The cubic root of 212620013 is about 596.8539148203.

Adding to 212620013 its reverse (310026212), we get a palindrome (522646225).

The spelling of 212620013 in words is "two hundred twelve million, six hundred twenty thousand, thirteen".