210221020121002 has 32 divisors (see below), whose sum is σ = 344995942556160. Its totient is φ = 95278211754480.

The previous prime is 210221020120963. The next prime is 210221020121051. The reversal of 210221020121002 is 200121020122012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526413 + ... + 20511439.

It is an arithmetic number, because the mean of its divisors is an integer number (10781123204880).

Almost surely, 2^{210221020121002} is an apocalyptic number.

210221020121002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210221020121002 is a deficient number, since it is larger than the sum of its proper divisors (134774922435158).

210221020121002 is a wasteful number, since it uses less digits than its factorization.

210221020121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19986426.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210221020121002 its reverse (200121020122012), we get a palindrome (410342040243014).

The spelling of 210221020121002 in words is "two hundred ten trillion, two hundred twenty-one billion, twenty million, one hundred twenty-one thousand, two".