1220022233 has 4 divisors (see below), whose sum is σ = 1220468148. Its totient is φ = 1219576320.

The previous prime is 1220022203. The next prime is 1220022247. The reversal of 1220022233 is 3322200221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 485232784 + 734789449 = 22028^2 + 27107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220022233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220022203) 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, 218828 + ... + 224333.

It is an arithmetic number, because the mean of its divisors is an integer number (305117037).

Almost surely, 2^1220022233 is an apocalyptic number.

It is an amenable number.

1220022233 is a deficient number, since it is larger than the sum of its proper divisors (445915).

1220022233 is an equidigital number, since it uses as much as digits as its factorization.

1220022233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445914.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1220022233 is about 34928.8166561651. The cubic root of 1220022233 is about 1068.5362209896.

Adding to 1220022233 its reverse (3322200221), we get a palindrome (4542222454).

The spelling of 1220022233 in words is "one billion, two hundred twenty million, twenty-two thousand, two hundred thirty-three".