20101220201010 has 64 divisors (see below), whose sum is σ = 52265024485632. Its totient is φ = 4918363950336.

The previous prime is 20101220200967. The next prime is 20101220201021. The reversal of 20101220201010 is 1010202210102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154251009 + ... + 154381268.

It is an arithmetic number, because the mean of its divisors is an integer number (816641007588).

Almost surely, 2^{20101220201010} is an apocalyptic number.

20101220201010 is an abundant number, since it is smaller than the sum of its proper divisors (32163804284622).

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

20101220201010 is a wasteful number, since it uses less digits than its factorization.

20101220201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308632467.

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

Adding to 20101220201010 its reverse (1010202210102), we get a palindrome (21111422411112).

The spelling of 20101220201010 in words is "twenty trillion, one hundred one billion, two hundred twenty million, two hundred one thousand, ten".