20120020000 has 120 divisors (see below), whose sum is σ = 49983950016. Its totient is φ = 7969056000.

The previous prime is 20120019967. The next prime is 20120020021. The reversal of 20120020000 is 2002102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2055117 + ... + 2064883.

Almost surely, 2^20120020000 is an apocalyptic number.

20120020000 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 20120020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24991975008).

20120020000 is an abundant number, since it is smaller than the sum of its proper divisors (29863930016).

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

20120020000 is an equidigital number, since it uses as much as digits as its factorization.

20120020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9900 (or 9877 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 20120020000 its reverse (2002102), we get a palindrome (20122022102).

The spelling of 20120020000 in words is "twenty billion, one hundred twenty million, twenty thousand".