23120230212 has 18 divisors (see below), whose sum is σ = 58442804238. Its totient is φ = 7706743392.

The previous prime is 23120230183. The next prime is 23120230229. The reversal of 23120230212 is 21203202132.

It can be written as a sum of positive squares in only one way, i.e., 20350734336 + 2769495876 = 142656^2 + 52626^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321114273 + ... + 321114344.

Almost surely, 2^23120230212 is an apocalyptic number.

It is an amenable number.

23120230212 is an abundant number, since it is smaller than the sum of its proper divisors (35322574026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23120230212 is a wasteful number, since it uses less digits than its factorization.

23120230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642228627 (or 642228622 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23120230212 its reverse (21203202132), we get a palindrome (44323432344).

The spelling of 23120230212 in words is "twenty-three billion, one hundred twenty million, two hundred thirty thousand, two hundred twelve".