20012620213 has 4 divisors (see below), whose sum is σ = 20039268928. Its totient is φ = 19985971500.

The previous prime is 20012620211. The next prime is 20012620241. The reversal of 20012620213 is 31202621002.

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 20012620213 - 2¹ = 20012620211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012620211) 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 3 ways as a sum of consecutive naturals, for example, 13323231 + ... + 13324732.

It is an arithmetic number, because the mean of its divisors is an integer number (5009817232).

Almost surely, 2^20012620213 is an apocalyptic number.

It is an amenable number.

20012620213 is a deficient number, since it is larger than the sum of its proper divisors (26648715).

20012620213 is an equidigital number, since it uses as much as digits as its factorization.

20012620213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26648714.

The product of its (nonzero) digits is 288, while the sum is 19.

The spelling of 20012620213 in words is "twenty billion, twelve million, six hundred twenty thousand, two hundred thirteen".