210021022120202 has 4 divisors (see below), whose sum is σ = 315031533180306. Its totient is φ = 105010511060100.

The previous prime is 210021022120153. The next prime is 210021022120211. The reversal of 210021022120202 is 202021220120012.

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 only one way, i.e., 209399682481201 + 621339639001 = 14470649^2 + 788251^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52505255530049 + ... + 52505255530052.

Almost surely, 2^{210021022120202} is an apocalyptic number.

210021022120202 is a deficient number, since it is larger than the sum of its proper divisors (105010511060104).

210021022120202 is a wasteful number, since it uses less digits than its factorization.

210021022120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105010511060103.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210021022120202 its reverse (202021220120012), we get a palindrome (412042242240214).

The spelling of 210021022120202 in words is "two hundred ten trillion, twenty-one billion, twenty-two million, one hundred twenty thousand, two hundred two".