210000110121 has 6 divisors (see below), whose sum is σ = 303333492410. Its totient is φ = 140000073408.

The previous prime is 210000110093. The next prime is 210000110153. The reversal of 210000110121 is 121011000012.

It is a happy number.

210000110121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 155187935721 + 54812174400 = 393939^2 + 234120^2 .

It is not a de Polignac number, because 210000110121 - 2⁷ = 210000109993 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: 23333345569 = 210000110121 / (2 + 1 + 0 + 0 + 0 + 0 + 1 + 1 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210000110321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11666672776 + ... + 11666672793.

Almost surely, 2^210000110121 is an apocalyptic number.

It is an amenable number.

210000110121 is a deficient number, since it is larger than the sum of its proper divisors (93333382289).

210000110121 is a wasteful number, since it uses less digits than its factorization.

210000110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23333345575 (or 23333345572 counting only the distinct ones).

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

Adding to 210000110121 its reverse (121011000012), we get a palindrome (331011110133).

The spelling of 210000110121 in words is "two hundred ten billion, one hundred ten thousand, one hundred twenty-one".