20120012213 has 4 divisors (see below), whose sum is σ = 22994299680. Its totient is φ = 17245724748.

The previous prime is 20120012207. The next prime is 20120012219. The reversal of 20120012213 is 31221002102.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (20120012207) and next prime (20120012219).

It is a de Polignac number, because none of the positive numbers 2^k-20120012213 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 (20120012219) 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, 1437143723 + ... + 1437143736.

It is an arithmetic number, because the mean of its divisors is an integer number (5748574920).

Almost surely, 2^20120012213 is an apocalyptic number.

It is an amenable number.

20120012213 is a deficient number, since it is larger than the sum of its proper divisors (2874287467).

20120012213 is an equidigital number, since it uses as much as digits as its factorization.

20120012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874287466.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20120012213 its reverse (31221002102), we get a palindrome (51341014315).

The spelling of 20120012213 in words is "twenty billion, one hundred twenty million, twelve thousand, two hundred thirteen".