100001021000120 has 32 divisors (see below), whose sum is σ = 226719872050320. Its totient is φ = 39695061768960.

The previous prime is 100001021000053. The next prime is 100001021000143. The reversal of 100001021000120 is 21000120100001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 100001021000098 and 100001021000107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9542076917 + ... + 9542087396.

Almost surely, 2^{100001021000120} is an apocalyptic number.

100001021000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001021000120 is an abundant number, since it is smaller than the sum of its proper divisors (126718851050200).

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

100001021000120 is a wasteful number, since it uses less digits than its factorization.

100001021000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19084164455 (or 19084164451 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 100001021000120 its reverse (21000120100001), we get a palindrome (121001141100121).

The spelling of 100001021000120 in words is "one hundred trillion, one billion, twenty-one million, one hundred twenty", and thus it is an aban number.