100121000032020 has 384 divisors, whose sum is σ = 314622329462784. Its totient is φ = 23585126400000.

The previous prime is 100121000032019. The next prime is 100121000032049. The reversal of 100121000032020 is 20230000121001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 100121000031987 and 100121000032005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1210304260 + ... + 1210386980.

It is an arithmetic number, because the mean of its divisors is an integer number (819328982976).

Almost surely, 2^{100121000032020} is an apocalyptic number.

100121000032020 is a gapful number since it is divisible by the number (10) 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 100121000032020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157311164731392).

100121000032020 is an abundant number, since it is smaller than the sum of its proper divisors (214501329430764).

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

100121000032020 is a wasteful number, since it uses less digits than its factorization.

100121000032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83183 (or 83181 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 100121000032020 its reverse (20230000121001), we get a palindrome (120351000153021).

The spelling of 100121000032020 in words is "one hundred trillion, one hundred twenty-one billion, thirty-two thousand, twenty".