210002121221212 has 6 divisors (see below), whose sum is σ = 367503712137128. Its totient is φ = 105001060610604.

The previous prime is 210002121221201. The next prime is 210002121221227. The reversal of 210002121221212 is 212122121200012.

It is a self number, because there is not a number n which added to its sum of digits gives 210002121221212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26250265152648 + ... + 26250265152655.

Almost surely, 2^{210002121221212} is an apocalyptic number.

It is an amenable number.

210002121221212 is a deficient number, since it is larger than the sum of its proper divisors (157501590915916).

210002121221212 is a wasteful number, since it uses less digits than its factorization.

210002121221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52500530305307 (or 52500530305305 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210002121221212 its reverse (212122121200012), we get a palindrome (422124242421224).

The spelling of 210002121221212 in words is "two hundred ten trillion, two billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twelve".