20003401121020 has 48 divisors (see below), whose sum is σ = 43035395701536. Its totient is φ = 7805536128000.

The previous prime is 20003401121003. The next prime is 20003401121027. The reversal of 20003401121020 is 2012110430002.

It is a junction number, because it is equal to n+sod(n) for n = 20003401120985 and 20003401121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003401121027) 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, 8579680 + ... + 10659160.

It is an arithmetic number, because the mean of its divisors is an integer number (896570743782).

Almost surely, 2^{20003401121020} is an apocalyptic number.

20003401121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20003401121020 is an abundant number, since it is smaller than the sum of its proper divisors (23031994580516).

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

20003401121020 is a wasteful number, since it uses less digits than its factorization.

20003401121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091262 (or 2091260 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20003401121020 its reverse (2012110430002), we get a palindrome (22015511551022).

The spelling of 20003401121020 in words is "twenty trillion, three billion, four hundred one million, one hundred twenty-one thousand, twenty".