210002122121 has 8 divisors (see below), whose sum is σ = 230280237984. Its totient is φ = 189921841920.

The previous prime is 210002122103. The next prime is 210002122129. The reversal of 210002122121 is 121221200012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210002122121 - 2¹⁰ = 210002121097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210002122096 and 210002122105.

It is not an unprimeable number, because it can be changed into a prime (210002122129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49456691 + ... + 49460936.

It is an arithmetic number, because the mean of its divisors is an integer number (28785029748).

Almost surely, 2^210002122121 is an apocalyptic number.

It is an amenable number.

210002122121 is a deficient number, since it is larger than the sum of its proper divisors (20278115863).

210002122121 is a wasteful number, since it uses less digits than its factorization.

210002122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98917831.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210002122121 its reverse (121221200012), we get a palindrome (331223322133).

The spelling of 210002122121 in words is "two hundred ten billion, two million, one hundred twenty-two thousand, one hundred twenty-one".