20001201122010 has 32 divisors (see below), whose sum is σ = 48107010454272. Its totient is φ = 5322083881280.

The previous prime is 20001201121961. The next prime is 20001201122029. The reversal of 20001201122010 is 1022110210002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723095394 + ... + 723123053.

It is an arithmetic number, because the mean of its divisors is an integer number (1503344076696).

Almost surely, 2^{20001201122010} is an apocalyptic number.

20001201122010 is an abundant number, since it is smaller than the sum of its proper divisors (28105809332262).

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

20001201122010 is a wasteful number, since it uses less digits than its factorization.

20001201122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446218918.

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

Adding to 20001201122010 its reverse (1022110210002), we get a palindrome (21023311332012).

The spelling of 20001201122010 in words is "twenty trillion, one billion, two hundred one million, one hundred twenty-two thousand, ten".