1220021330 has 16 divisors (see below), whose sum is σ = 2395678464. Its totient is φ = 443644080.

The previous prime is 1220021323. The next prime is 1220021351. The reversal of 1220021330 is 331200221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5545442 + ... + 5545661.

It is an arithmetic number, because the mean of its divisors is an integer number (149729904).

Almost surely, 2^1220021330 is an apocalyptic number.

1220021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220021330 is a deficient number, since it is larger than the sum of its proper divisors (1175657134).

1220021330 is a wasteful number, since it uses less digits than its factorization.

1220021330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11091121.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1220021330 is about 34928.8037298731. The cubic root of 1220021330 is about 1068.5359573637.

Adding to 1220021330 its reverse (331200221), we get a palindrome (1551221551).

The spelling of 1220021330 in words is "one billion, two hundred twenty million, twenty-one thousand, three hundred thirty".