100120200000121 has 16 divisors (see below), whose sum is σ = 116391082393600. Its totient is φ = 84351059337168.

The previous prime is 100120200000097. The next prime is 100120200000173. The reversal of 100120200000121 is 121000002021001.

It is a cyclic number.

It is not a de Polignac number, because 100120200000121 - 2¹¹ = 100120199998073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100120200000098 and 100120200000107.

It is not an unprimeable number, because it can be changed into a prime (100120200030121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405816561 + ... + 406063198.

It is an arithmetic number, because the mean of its divisors is an integer number (7274442649600).

Almost surely, 2^{100120200000121} is an apocalyptic number.

It is an amenable number.

100120200000121 is a deficient number, since it is larger than the sum of its proper divisors (16270882393479).

100120200000121 is an equidigital number, since it uses as much as digits as its factorization.

100120200000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811880068.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100120200000121 its reverse (121000002021001), we get a palindrome (221120202021122).

The spelling of 100120200000121 in words is "one hundred trillion, one hundred twenty billion, two hundred million, one hundred twenty-one", and thus it is an aban number.