220422143 has 4 divisors (see below), whose sum is σ = 220458408. Its totient is φ = 220385880.

The previous prime is 220422101. The next prime is 220422149. The reversal of 220422143 is 341224022.

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

It is a cyclic number.

It is not a de Polignac number, because 220422143 - 2¹⁶ = 220356607 is a prime.

It is a super-2 number, since 2×220422143² = 97171842249424898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220422149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6548 + ... + 21993.

It is an arithmetic number, because the mean of its divisors is an integer number (55114602).

Almost surely, 2^220422143 is an apocalyptic number.

220422143 is a deficient number, since it is larger than the sum of its proper divisors (36265).

220422143 is an equidigital number, since it uses as much as digits as its factorization.

220422143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36264.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 220422143 is about 14846.6205919058. The cubic root of 220422143 is about 604.0669477931.

Adding to 220422143 its reverse (341224022), we get a palindrome (561646165).

The spelling of 220422143 in words is "two hundred twenty million, four hundred twenty-two thousand, one hundred forty-three".