220421253 has 32 divisors (see below), whose sum is σ = 328287232. Its totient is φ = 130636800.

The previous prime is 220421197. The next prime is 220421281. The reversal of 220421253 is 352124022.

It is not a de Polignac number, because 220421253 - 2⁶ = 220421189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220421153) 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 31 ways as a sum of consecutive naturals, for example, 407163 + ... + 407703.

It is an arithmetic number, because the mean of its divisors is an integer number (10258976).

Almost surely, 2^220421253 is an apocalyptic number.

It is an amenable number.

220421253 is a deficient number, since it is larger than the sum of its proper divisors (107865979).

220421253 is a wasteful number, since it uses less digits than its factorization.

220421253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 220421253 is about 14846.5906187246. The cubic root of 220421253 is about 604.0661347770.

Adding to 220421253 its reverse (352124022), we get a palindrome (572545275).

The spelling of 220421253 in words is "two hundred twenty million, four hundred twenty-one thousand, two hundred fifty-three".