1010120000121 has 6 divisors (see below), whose sum is σ = 1459062222410. Its totient is φ = 673413333408.

The previous prime is 1010120000117. The next prime is 1010120000207. The reversal of 1010120000121 is 1210000210101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 945571484025 + 64548516096 = 972405^2 + 254064^2 .

It is not a de Polignac number, because 1010120000121 - 2² = 1010120000117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 112235555569 = 1010120000121 / (1 + 0 + 1 + 0 + 1 + 2 + 0 + 0 + 0 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1010120004121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56117777776 + ... + 56117777793.

Almost surely, 2^{1010120000121} is an apocalyptic number.

It is an amenable number.

1010120000121 is a deficient number, since it is larger than the sum of its proper divisors (448942222289).

1010120000121 is a wasteful number, since it uses less digits than its factorization.

1010120000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112235555575 (or 112235555572 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1010120000121 its reverse (1210000210101), we get a palindrome (2220120210222).

The spelling of 1010120000121 in words is "one trillion, ten billion, one hundred twenty million, one hundred twenty-one", and thus it is an aban number.