12240020234 has 16 divisors (see below), whose sum is σ = 20145405672. Its totient is φ = 5542650048.

The previous prime is 12240020231. The next prime is 12240020237. The reversal of 12240020234 is 43202004221.

It is an interprime number because it is at equal distance from previous prime (12240020231) and next prime (12240020237).

It can be written as a sum of positive squares in 4 ways, for example, as 9900847009 + 2339173225 = 99503^2 + 48365^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12240020231) 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, 4439849 + ... + 4442604.

Almost surely, 2^12240020234 is an apocalyptic number.

12240020234 is a deficient number, since it is larger than the sum of its proper divisors (7905385438).

12240020234 is a wasteful number, since it uses less digits than its factorization.

12240020234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8882521.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 12240020234 its reverse (43202004221), we get a palindrome (55442024455).

The spelling of 12240020234 in words is "twelve billion, two hundred forty million, twenty thousand, two hundred thirty-four".