210012210121 has 32 divisors (see below), whose sum is σ = 250070768640. Its totient is φ = 172559128896.

The previous prime is 210012210101. The next prime is 210012210167. The reversal of 210012210121 is 121012210012.

It is a de Polignac number, because none of the positive numbers 2^k-210012210121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210012210101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39273970 + ... + 39279316.

It is an arithmetic number, because the mean of its divisors is an integer number (7814711520).

Almost surely, 2^210012210121 is an apocalyptic number.

It is an amenable number.

210012210121 is a deficient number, since it is larger than the sum of its proper divisors (40058558519).

210012210121 is a wasteful number, since it uses less digits than its factorization.

210012210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6733.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210012210121 its reverse (121012210012), we get a palindrome (331024420133).

The spelling of 210012210121 in words is "two hundred ten billion, twelve million, two hundred ten thousand, one hundred twenty-one".