201020121020210 has 64 divisors (see below), whose sum is σ = 375266378317824. Its totient is φ = 77448139934400.

The previous prime is 201020121020197. The next prime is 201020121020231. The reversal of 201020121020210 is 12020121020102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314014355 + ... + 314653865.

It is an arithmetic number, because the mean of its divisors is an integer number (5863537161216).

Almost surely, 2^{201020121020210} is an apocalyptic number.

201020121020210 is a deficient number, since it is larger than the sum of its proper divisors (174246257297614).

201020121020210 is a wasteful number, since it uses less digits than its factorization.

201020121020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644319.

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

Adding to 201020121020210 its reverse (12020121020102), we get a palindrome (213040242040312).

The spelling of 201020121020210 in words is "two hundred one trillion, twenty billion, one hundred twenty-one million, twenty thousand, two hundred ten".