20123233312 has 96 divisors (see below), whose sum is σ = 49144983552. Its totient is φ = 7898010624.

The previous prime is 20123233303. The next prime is 20123233373. The reversal of 20123233312 is 21333232102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342618 + ... + 397030.

It is an arithmetic number, because the mean of its divisors is an integer number (511926912).

Almost surely, 2^20123233312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123233312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24572491776).

20123233312 is an abundant number, since it is smaller than the sum of its proper divisors (29021750240).

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

20123233312 is a wasteful number, since it uses less digits than its factorization.

20123233312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54570 (or 54562 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20123233312 its reverse (21333232102), we get a palindrome (41456465414).

The spelling of 20123233312 in words is "twenty billion, one hundred twenty-three million, two hundred thirty-three thousand, three hundred twelve".