20120200120 has 16 divisors (see below), whose sum is σ = 45270450360. Its totient is φ = 8048080032.

The previous prime is 20120200097. The next prime is 20120200201. The reversal of 20120200120 is 2100202102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20120200097 and 20120200106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251502462 + ... + 251502541.

Almost surely, 2^20120200120 is an apocalyptic number.

20120200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120200120 is an abundant number, since it is smaller than the sum of its proper divisors (25150250240).

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

20120200120 is a wasteful number, since it uses less digits than its factorization.

20120200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503005014 (or 503005010 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20120200120 its reverse (2100202102), we get a palindrome (22220402222).

The spelling of 20120200120 in words is "twenty billion, one hundred twenty million, two hundred thousand, one hundred twenty".