1220422323 has 4 divisors (see below), whose sum is σ = 1627229768. Its totient is φ = 813614880.

The previous prime is 1220422309. The next prime is 1220422327. The reversal of 1220422323 is 3232240221.

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

It is not a de Polignac number, because 1220422323 - 2¹³ = 1220414131 is a prime.

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 1220422323.

It is not an unprimeable number, because it can be changed into a prime (1220422327) 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, 203403718 + ... + 203403723.

It is an arithmetic number, because the mean of its divisors is an integer number (406807442).

Almost surely, 2^1220422323 is an apocalyptic number.

1220422323 is a deficient number, since it is larger than the sum of its proper divisors (406807445).

1220422323 is an equidigital number, since it uses as much as digits as its factorization.

1220422323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406807444.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1220422323 is about 34934.5434062047. The cubic root of 1220422323 is about 1068.6530122856.

Adding to 1220422323 its reverse (3232240221), we get a palindrome (4452662544).

The spelling of 1220422323 in words is "one billion, two hundred twenty million, four hundred twenty-two thousand, three hundred twenty-three".