1222234220 has 12 divisors (see below), whose sum is σ = 2566691904. Its totient is φ = 488893680.

The previous prime is 1222234207. The next prime is 1222234243. The reversal of 1222234220 is 224322221.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 61111711 = 1222234220 / (1 + 2 + 2 + 2 + 2 + 3 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1222234192 and 1222234201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30555836 + ... + 30555875.

It is an arithmetic number, because the mean of its divisors is an integer number (213890992).

Almost surely, 2^1222234220 is an apocalyptic number.

1222234220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222234220 is an abundant number, since it is smaller than the sum of its proper divisors (1344457684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222234220 is a wasteful number, since it uses less digits than its factorization.

1222234220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61111720 (or 61111718 counting only the distinct ones).

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

The square root of 1222234220 is about 34960.4665300679. The cubic root of 1222234220 is about 1069.1816084675.

Adding to 1222234220 its reverse (224322221), we get a palindrome (1446556441).

The spelling of 1222234220 in words is "one billion, two hundred twenty-two million, two hundred thirty-four thousand, two hundred twenty".