20002000120 has 16 divisors (see below), whose sum is σ = 45004500360. Its totient is φ = 8000800032.

The previous prime is 20002000111. The next prime is 20002000121. The reversal of 20002000120 is 2100020002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002000121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250024962 + ... + 250025041.

Almost surely, 2^20002000120 is an apocalyptic number.

20002000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002000120 is an abundant number, since it is smaller than the sum of its proper divisors (25002500240).

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

20002000120 is a wasteful number, since it uses less digits than its factorization.

20002000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500050014 (or 500050010 counting only the distinct ones).

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

Adding to 20002000120 its reverse (2100020002), we get a palindrome (22102020122).

The spelling of 20002000120 in words is "twenty billion, two million, one hundred twenty", and thus it is an aban number.