220211481 has 8 divisors (see below), whose sum is σ = 335560384. Its totient is φ = 125835120.

The previous prime is 220211479. The next prime is 220211483. The reversal of 220211481 is 184112022.

It is an interprime number because it is at equal distance from previous prime (220211479) and next prime (220211483).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220211481 - 2¹ = 220211479 is a prime.

It is a super-2 number, since 2×220211481² = 96986192728426722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10486261 = 220211481 / (2 + 2 + 0 + 2 + 1 + 1 + 4 + 8 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220211483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5243110 + ... + 5243151.

It is an arithmetic number, because the mean of its divisors is an integer number (41945048).

Almost surely, 2^220211481 is an apocalyptic number.

220211481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220211481 is a deficient number, since it is larger than the sum of its proper divisors (115348903).

220211481 is a wasteful number, since it uses less digits than its factorization.

220211481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486271.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 220211481 is about 14839.5242848280. The cubic root of 220211481 is about 603.8744466967.

The spelling of 220211481 in words is "two hundred twenty million, two hundred eleven thousand, four hundred eighty-one".