20123220000100 has 144 divisors (see below), whose sum is σ = 52241781811968. Its totient is φ = 6578330204160.

The previous prime is 20123220000089. The next prime is 20123220000151. The reversal of 20123220000100 is 100002232102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3042672 + ... + 7035928.

It is an arithmetic number, because the mean of its divisors is an integer number (362790151472).

Almost surely, 2^{20123220000100} is an apocalyptic number.

20123220000100 is a gapful number since it is divisible by the number (20) 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 20123220000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26120890905984).

20123220000100 is an abundant number, since it is smaller than the sum of its proper divisors (32118561811868).

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

20123220000100 is a wasteful number, since it uses less digits than its factorization.

20123220000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993614 (or 3993607 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20123220000100 its reverse (100002232102), we get a palindrome (20223222232202).

The spelling of 20123220000100 in words is "twenty trillion, one hundred twenty-three billion, two hundred twenty million, one hundred", and thus it is an aban number.