20002003120 has 80 divisors (see below), whose sum is σ = 51489704448. Its totient is φ = 7164875520.

The previous prime is 20002003097. The next prime is 20002003129. The reversal of 20002003120 is 2130020002.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 20002003097 and 20002003106.

It is not an unprimeable number, because it can be changed into a prime (20002003129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110664 + ... + 228583.

Almost surely, 2^20002003120 is an apocalyptic number.

20002003120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002003120 is an abundant number, since it is smaller than the sum of its proper divisors (31487701328).

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

20002003120 is a wasteful number, since it uses less digits than its factorization.

20002003120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339338 (or 339332 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20002003120 its reverse (2130020002), we get a palindrome (22132023122).

The spelling of 20002003120 in words is "twenty billion, two million, three thousand, one hundred twenty".