20001012021210 has 48 divisors (see below), whose sum is σ = 52763000316768. Its totient is φ = 4848730186080.

The previous prime is 20001012021187. The next prime is 20001012021233. The reversal of 20001012021210 is 1212021010002.

It is an interprime number because it is at equal distance from previous prime (20001012021187) and next prime (20001012021233).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2754956704 + ... + 2754963963.

It is an arithmetic number, because the mean of its divisors is an integer number (1099229173266).

Almost surely, 2^{20001012021210} is an apocalyptic number.

20001012021210 is an abundant number, since it is smaller than the sum of its proper divisors (32761988295558).

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

20001012021210 is a wasteful number, since it uses less digits than its factorization.

20001012021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5509920699 (or 5509920688 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20001012021210 its reverse (1212021010002), we get a palindrome (21213033031212).

The spelling of 20001012021210 in words is "twenty trillion, one billion, twelve million, twenty-one thousand, two hundred ten".