100020331331020 has 12 divisors (see below), whose sum is σ = 210042695795184. Its totient is φ = 40008132532400.

The previous prime is 100020331330999. The next prime is 100020331331023. The reversal of 100020331331020 is 20133133020001.

It is not an unprimeable number, because it can be changed into a prime (100020331331023) 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, 2500508283256 + ... + 2500508283295.

It is an arithmetic number, because the mean of its divisors is an integer number (17503557982932).

Almost surely, 2^{100020331331020} is an apocalyptic number.

100020331331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100020331331020 is an abundant number, since it is smaller than the sum of its proper divisors (110022364464164).

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

100020331331020 is a wasteful number, since it uses less digits than its factorization.

100020331331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001016566560 (or 5001016566558 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 100020331331020 its reverse (20133133020001), we get a palindrome (120153464351021).

The spelling of 100020331331020 in words is "one hundred trillion, twenty billion, three hundred thirty-one million, three hundred thirty-one thousand, twenty".