220421010 has 64 divisors (see below), whose sum is σ = 544325760. Its totient is φ = 57093120.

The previous prime is 220421009. The next prime is 220421017. The reversal of 220421010 is 10124022.

220421010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220421017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310536 + ... + 311244.

It is an arithmetic number, because the mean of its divisors is an integer number (8505090).

Almost surely, 2^220421010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220421010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272162880).

220421010 is an abundant number, since it is smaller than the sum of its proper divisors (323904750).

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

220421010 is a wasteful number, since it uses less digits than its factorization.

220421010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003.

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

The square root of 220421010 is about 14846.5824350252. The cubic root of 220421010 is about 604.0659127958.

Adding to 220421010 its reverse (10124022), we get a palindrome (230545032).

The spelling of 220421010 in words is "two hundred twenty million, four hundred twenty-one thousand, ten".