123020000012 has 48 divisors (see below), whose sum is σ = 265331189760. Its totient is φ = 48600205632.

The previous prime is 123019999987. The next prime is 123020000041. The reversal of 123020000012 is 210000020321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123019999948 and 123020000002.

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, 32189 + ... + 497067.

It is an arithmetic number, because the mean of its divisors is an integer number (5527733120).

Almost surely, 2^123020000012 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 123020000012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132665594880).

123020000012 is an abundant number, since it is smaller than the sum of its proper divisors (142311189748).

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

123020000012 is a wasteful number, since it uses less digits than its factorization.

123020000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465630 (or 465628 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 123020000012 its reverse (210000020321), we get a palindrome (333020020333).

The spelling of 123020000012 in words is "one hundred twenty-three billion, twenty million, twelve", and thus it is an aban number.