100011001010120 has 32 divisors (see below), whose sum is σ = 226534985523000. Its totient is φ = 39735914492928.

The previous prime is 100011001010069. The next prime is 100011001010161. The reversal of 100011001010120 is 21010100110001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 74591515943044 + 25419485067076 = 8636638^2 + 5041774^2 .

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 = 100011001010098 and 100011001010107.

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, 8390178689 + ... + 8390190608.

Almost surely, 2^{100011001010120} is an apocalyptic number.

100011001010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011001010120 is an abundant number, since it is smaller than the sum of its proper divisors (126523984512880).

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

100011001010120 is a wasteful number, since it uses less digits than its factorization.

100011001010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16780369457 (or 16780369453 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 100011001010120 its reverse (21010100110001), we get a palindrome (121021101120121).

The spelling of 100011001010120 in words is "one hundred trillion, eleven billion, one million, ten thousand, one hundred twenty".