210212002121 has 8 divisors (see below), whose sum is σ = 229660925184. Its totient is φ = 190819535920.

The previous prime is 210212002097. The next prime is 210212002127. The reversal of 210212002121 is 121200212012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210212002121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210212002096 and 210212002105.

It is not an unprimeable number, because it can be changed into a prime (210212002127) 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, 14106425 + ... + 14121318.

It is an arithmetic number, because the mean of its divisors is an integer number (28707615648).

Almost surely, 2^210212002121 is an apocalyptic number.

It is an amenable number.

210212002121 is a deficient number, since it is larger than the sum of its proper divisors (19448923063).

210212002121 is a wasteful number, since it uses less digits than its factorization.

210212002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28228431.

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

Adding to 210212002121 its reverse (121200212012), we get a palindrome (331412214133).

The spelling of 210212002121 in words is "two hundred ten billion, two hundred twelve million, two thousand, one hundred twenty-one".