20021022210 has 96 divisors (see below), whose sum is σ = 55925897472. Its totient is φ = 4573739520.

The previous prime is 20021022173. The next prime is 20021022223. The reversal of 20021022210 is 1222012002.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 4868055 + ... + 4872165.

It is an arithmetic number, because the mean of its divisors is an integer number (582561432).

Almost surely, 2^20021022210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021022210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27962948736).

20021022210 is an abundant number, since it is smaller than the sum of its proper divisors (35904875262).

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

20021022210 is a wasteful number, since it uses less digits than its factorization.

20021022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448 (or 7441 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20021022210 its reverse (1222012002), we get a palindrome (21243034212).

The spelling of 20021022210 in words is "twenty billion, twenty-one million, twenty-two thousand, two hundred ten".