20021333010 has 64 divisors (see below), whose sum is σ = 55030579200. Its totient is φ = 4566727872.

The previous prime is 20021332963. The next prime is 20021333027. The reversal of 20021333010 is 1033312002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1071 + ... + 200109.

It is an arithmetic number, because the mean of its divisors is an integer number (859852800).

Almost surely, 2^20021333010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021333010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27515289600).

20021333010 is an abundant number, since it is smaller than the sum of its proper divisors (35009246190).

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

20021333010 is a wasteful number, since it uses less digits than its factorization.

20021333010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199535.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20021333010 its reverse (1033312002), we get a palindrome (21054645012).

The spelling of 20021333010 in words is "twenty billion, twenty-one million, three hundred thirty-three thousand, ten".