2003121102020 has 96 divisors (see below), whose sum is σ = 4487992790400. Its totient is φ = 748365318144.

The previous prime is 2003121102019. The next prime is 2003121102029. The reversal of 2003121102020 is 202011213002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2003121101986 and 2003121102004.

It is not an unprimeable number, because it can be changed into a prime (2003121102029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127263311 + ... + 127279049.

It is an arithmetic number, because the mean of its divisors is an integer number (46749924900).

Almost surely, 2^{2003121102020} is an apocalyptic number.

2003121102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2003121102020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2243996395200).

2003121102020 is an abundant number, since it is smaller than the sum of its proper divisors (2484871688380).

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

2003121102020 is a wasteful number, since it uses less digits than its factorization.

2003121102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18597 (or 18595 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2003121102020 its reverse (202011213002), we get a palindrome (2205132315022).

The spelling of 2003121102020 in words is "two trillion, three billion, one hundred twenty-one million, one hundred two thousand, twenty".