1020110000121 has 6 divisors (see below), whose sum is σ = 1473492222410. Its totient is φ = 680073333408.

The previous prime is 1020110000113. The next prime is 1020110000191. The reversal of 1020110000121 is 1210000110201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 705096090000 + 315013910121 = 839700^2 + 561261^2 .

It is not a de Polignac number, because 1020110000121 - 2³ = 1020110000113 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: 113345555569 = 1020110000121 / (1 + 0 + 2 + 0 + 1 + 1 + 0 + 0 + 0 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020110000191) 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, 56672777776 + ... + 56672777793.

Almost surely, 2^{1020110000121} is an apocalyptic number.

It is an amenable number.

1020110000121 is a deficient number, since it is larger than the sum of its proper divisors (453382222289).

1020110000121 is a wasteful number, since it uses less digits than its factorization.

1020110000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113345555575 (or 113345555572 counting only the distinct ones).

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

Adding to 1020110000121 its reverse (1210000110201), we get a palindrome (2230110110322).

The spelling of 1020110000121 in words is "one trillion, twenty billion, one hundred ten million, one hundred twenty-one", and thus it is an aban number.