100121011023120 has 160 divisors (see below), whose sum is σ = 311331186814464. Its totient is φ = 26616789196800.

The previous prime is 100121011023119. The next prime is 100121011023149. The reversal of 100121011023120 is 21320110121001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 100121011023120.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136277884 + ... + 137010596.

Almost surely, 2^{100121011023120} is an apocalyptic number.

100121011023120 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 100121011023120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155665593407232).

100121011023120 is an abundant number, since it is smaller than the sum of its proper divisors (211210175791344).

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

100121011023120 is a wasteful number, since it uses less digits than its factorization.

100121011023120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734481 (or 734475 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 100121011023120 its reverse (21320110121001), we get a palindrome (121441121144121).

The spelling of 100121011023120 in words is "one hundred trillion, one hundred twenty-one billion, eleven million, twenty-three thousand, one hundred twenty".