1002123230020 has 48 divisors (see below), whose sum is σ = 2297436313536. Its totient is φ = 364144464000.

The previous prime is 1002123229979. The next prime is 1002123230027. The reversal of 1002123230020 is 200323212001.

It is a junction number, because it is equal to n+sod(n) for n = 1002123229976 and 1002123230003.

It is not an unprimeable number, because it can be changed into a prime (1002123230027) 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, 1345386 + ... + 1953025.

It is an arithmetic number, because the mean of its divisors is an integer number (47863256532).

Almost surely, 2^{1002123230020} is an apocalyptic number.

1002123230020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002123230020 is an abundant number, since it is smaller than the sum of its proper divisors (1295313083516).

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

1002123230020 is a wasteful number, since it uses less digits than its factorization.

1002123230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299812 (or 3299810 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1002123230020 its reverse (200323212001), we get a palindrome (1202446442021).

The spelling of 1002123230020 in words is "one trillion, two billion, one hundred twenty-three million, two hundred thirty thousand, twenty".