20120120000 has 70 divisors (see below), whose sum is σ = 49891457748. Its totient is φ = 8048032000.

The previous prime is 20120119993. The next prime is 20120120011. The reversal of 20120120000 is 2102102.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20120120000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 211502 + ... + 291501.

Almost surely, 2^20120120000 is an apocalyptic number.

20120120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120120000 is an abundant number, since it is smaller than the sum of its proper divisors (29771337748).

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

20120120000 is an frugal number, since it uses more digits than its factorization.

20120120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503035 (or 503010 counting only the distinct ones).

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

Adding to 20120120000 its reverse (2102102), we get a palindrome (20122222102).

The spelling of 20120120000 in words is "twenty billion, one hundred twenty million, one hundred twenty thousand".