220269421 has 4 divisors (see below), whose sum is σ = 221183644. Its totient is φ = 219355200.

The previous prime is 220269409. The next prime is 220269433. The reversal of 220269421 is 124962022.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (220269409) and next prime (220269433).

It can be written as a sum of positive squares in 2 ways, for example, as 129276900 + 90992521 = 11370^2 + 9539^2 .

It is a cyclic number.

It is not a de Polignac number, because 220269421 - 2⁵ = 220269389 is a prime.

It is a super-3 number, since 3×220269421³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220269421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220269461) 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 3 ways as a sum of consecutive naturals, for example, 456750 + ... + 457231.

It is an arithmetic number, because the mean of its divisors is an integer number (55295911).

Almost surely, 2^220269421 is an apocalyptic number.

It is an amenable number.

220269421 is a deficient number, since it is larger than the sum of its proper divisors (914223).

220269421 is an equidigital number, since it uses as much as digits as its factorization.

220269421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914222.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 220269421 is about 14841.4763753476. The cubic root of 220269421 is about 603.9274039980.

The spelling of 220269421 in words is "two hundred twenty million, two hundred sixty-nine thousand, four hundred twenty-one".