20021011010 has 256 divisors, whose sum is σ = 53012413440. Its totient is φ = 5233213440.

The previous prime is 20021011007. The next prime is 20021011019. The reversal of 20021011010 is 1011012002.

It is not an unprimeable number, because it can be changed into a prime (20021011019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4932902 + ... + 4936958.

It is an arithmetic number, because the mean of its divisors is an integer number (207079740).

Almost surely, 2^20021011010 is an apocalyptic number.

20021011010 is an abundant number, since it is smaller than the sum of its proper divisors (32991402430).

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

20021011010 is a wasteful number, since it uses less digits than its factorization.

20021011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4141.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20021011010 its reverse (1011012002), we get a palindrome (21032023012).

The spelling of 20021011010 in words is "twenty billion, twenty-one million, eleven thousand, ten".