20121230213 has 8 divisors (see below), whose sum is σ = 23372670720. Its totient is φ = 16964034480.

The previous prime is 20121230203. The next prime is 20121230249. The reversal of 20121230213 is 31203212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20121230213 - 2¹² = 20121226117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121230191 and 20121230200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121230203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23560733 + ... + 23561586.

It is an arithmetic number, because the mean of its divisors is an integer number (2921583840).

Almost surely, 2^20121230213 is an apocalyptic number.

It is an amenable number.

20121230213 is a deficient number, since it is larger than the sum of its proper divisors (3251440507).

20121230213 is an equidigital number, since it uses as much as digits as its factorization.

20121230213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47122387.

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

Adding to 20121230213 its reverse (31203212102), we get a palindrome (51324442315).

The spelling of 20121230213 in words is "twenty billion, one hundred twenty-one million, two hundred thirty thousand, two hundred thirteen".