100001011210120 has 128 divisors (see below), whose sum is σ = 227276722713600. Its totient is φ = 39598179422976.

The previous prime is 100001011210039. The next prime is 100001011210123. The reversal of 100001011210120 is 21012110100001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100001011210097 and 100001011210106.

It is not an unprimeable number, because it can be changed into a prime (100001011210123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3605055211 + ... + 3605082949.

It is an arithmetic number, because the mean of its divisors is an integer number (1775599396200).

Almost surely, 2^{100001011210120} is an apocalyptic number.

100001011210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100001011210120 is an abundant number, since it is smaller than the sum of its proper divisors (127275711503480).

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

100001011210120 is a wasteful number, since it uses less digits than its factorization.

100001011210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30107 (or 30103 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100001011210120 its reverse (21012110100001), we get a palindrome (121013121310121).

The spelling of 100001011210120 in words is "one hundred trillion, one billion, eleven million, two hundred ten thousand, one hundred twenty".