123012000223312 has 160 divisors (see below), whose sum is σ = 261000076925952. Its totient is φ = 55939589701632.

The previous prime is 123012000223253. The next prime is 123012000223339. The reversal of 123012000223312 is 213322000210321.

It is a super-2 number, since 2×123012000223312² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443606818 + ... + 443884030.

Almost surely, 2^{123012000223312} 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 123012000223312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130500038462976).

123012000223312 is an abundant number, since it is smaller than the sum of its proper divisors (137988076702640).

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

123012000223312 is a wasteful number, since it uses less digits than its factorization.

123012000223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277725 (or 277719 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 123012000223312 its reverse (213322000210321), we get a palindrome (336334000433633).

The spelling of 123012000223312 in words is "one hundred twenty-three trillion, twelve billion, two hundred twenty-three thousand, three hundred twelve".