20001210042210 has 32 divisors (see below), whose sum is σ = 48020340879360. Its totient is φ = 5331718591488.

The previous prime is 20001210042173. The next prime is 20001210042311. The reversal of 20001210042210 is 1224001210002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20001210042210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121004770 + ... + 121169949.

It is an arithmetic number, because the mean of its divisors is an integer number (1500635652480).

Almost surely, 2^{20001210042210} is an apocalyptic number.

20001210042210 is an abundant number, since it is smaller than the sum of its proper divisors (28019130837150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001210042210 is a wasteful number, since it uses less digits than its factorization.

20001210042210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242177482.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20001210042210 its reverse (1224001210002), we get a palindrome (21225211252212).

The spelling of 20001210042210 in words is "twenty trillion, one billion, two hundred ten million, forty-two thousand, two hundred ten".