210110210010121 has 4 divisors (see below), whose sum is σ = 210110325242644. Its totient is φ = 210110094777600.

The previous prime is 210110210010119. The next prime is 210110210010133. The reversal of 210110210010121 is 121010012011012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150289823525625 + 59820386484496 = 12259275^2 + 7734364^2 .

It is a cyclic number.

It is not a de Polignac number, because 210110210010121 - 2¹ = 210110210010119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210110210010161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54836520 + ... + 58542841.

It is an arithmetic number, because the mean of its divisors is an integer number (52527581310661).

Almost surely, 2^{210110210010121} is an apocalyptic number.

It is an amenable number.

210110210010121 is a deficient number, since it is larger than the sum of its proper divisors (115232523).

210110210010121 is a wasteful number, since it uses less digits than its factorization.

210110210010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115232522.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 210110210010121 its reverse (121010012011012), we get a palindrome (331120222021133).

The spelling of 210110210010121 in words is "two hundred ten trillion, one hundred ten billion, two hundred ten million, ten thousand, one hundred twenty-one".