20021103551010 has 128 divisors (see below), whose sum is σ = 48513456230400. Its totient is φ = 5287767803136.

The previous prime is 20021103550951. The next prime is 20021103551017. The reversal of 20021103551010 is 1015530112002.

It is not an unprimeable number, because it can be changed into a prime (20021103551017) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 2599126819 + ... + 2599134521.

It is an arithmetic number, because the mean of its divisors is an integer number (379011376800).

Almost surely, 2^{20021103551010} is an apocalyptic number.

20021103551010 is an abundant number, since it is smaller than the sum of its proper divisors (28492352679390).

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

20021103551010 is a wasteful number, since it uses less digits than its factorization.

20021103551010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9472.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 20021103551010 its reverse (1015530112002), we get a palindrome (21036633663012).

The spelling of 20021103551010 in words is "twenty trillion, twenty-one billion, one hundred three million, five hundred fifty-one thousand, ten".