20123212034 has 8 divisors (see below), whose sum is σ = 30523973580. Its totient is φ = 9948554176.

The previous prime is 20123212033. The next prime is 20123212051. The reversal of 20123212034 is 43021232102.

It can be written as a sum of positive squares in 2 ways, for example, as 20120571409 + 2640625 = 141847^2 + 1625^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20123211997 and 20123212015.

It is not an unprimeable number, because it can be changed into a prime (20123212033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56525699 + ... + 56526054.

Almost surely, 2^20123212034 is an apocalyptic number.

20123212034 is a deficient number, since it is larger than the sum of its proper divisors (10400761546).

20123212034 is a wasteful number, since it uses less digits than its factorization.

20123212034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113051844.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20123212034 its reverse (43021232102), we get a palindrome (63144444136).

The spelling of 20123212034 in words is "twenty billion, one hundred twenty-three million, two hundred twelve thousand, thirty-four".