201210120121210 has 32 divisors (see below), whose sum is σ = 364183731284112. Its totient is φ = 80039584181760.

The previous prime is 201210120121201. The next prime is 201210120121223. The reversal of 201210120121210 is 12121021012102.

It can be written as a sum of positive squares in 8 ways, for example, as 4743670932009 + 196466449189201 = 2177997^2 + 14016649^2 .

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 in 15 ways as a sum of consecutive naturals, for example, 74049307 + ... + 76718446.

Almost surely, 2^{201210120121210} is an apocalyptic number.

201210120121210 is a deficient number, since it is larger than the sum of its proper divisors (162973611162902).

201210120121210 is a wasteful number, since it uses less digits than its factorization.

201210120121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150768498.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201210120121210 its reverse (12121021012102), we get a palindrome (213331141133312).

The spelling of 201210120121210 in words is "two hundred one trillion, two hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, two hundred ten".