123021333312 has 112 divisors (see below), whose sum is σ = 330325415040. Its totient is φ = 40399699968.

The previous prime is 123021333307. The next prime is 123021333343. The reversal of 123021333312 is 213333120321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 13773264 + ... + 13782192.

Almost surely, 2^123021333312 is an apocalyptic number.

123021333312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123021333312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165162707520).

123021333312 is an abundant number, since it is smaller than the sum of its proper divisors (207304081728).

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

123021333312 is an equidigital number, since it uses as much as digits as its factorization.

123021333312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000 (or 9990 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 123021333312 its reverse (213333120321), we get a palindrome (336354453633).

The spelling of 123021333312 in words is "one hundred twenty-three billion, twenty-one million, three hundred thirty-three thousand, three hundred twelve".