1220322002 has 4 divisors (see below), whose sum is σ = 1830483006. Its totient is φ = 610161000.

The previous prime is 1220321969. The next prime is 1220322007. The reversal of 1220322002 is 2002230221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2002230221 = 47 ⋅42600643.

It can be written as a sum of positive squares in only one way, i.e., 744689521 + 475632481 = 27289^2 + 21809^2 .

It is not an unprimeable number, because it can be changed into a prime (1220322007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305080499 + ... + 305080502.

Almost surely, 2^1220322002 is an apocalyptic number.

1220322002 is a deficient number, since it is larger than the sum of its proper divisors (610161004).

1220322002 is an equidigital number, since it uses as much as digits as its factorization.

1220322002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610161003.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1220322002 is about 34933.1075342575. The cubic root of 1220322002 is about 1068.6237297237.

Adding to 1220322002 its reverse (2002230221), we get a palindrome (3222552223).

The spelling of 1220322002 in words is "one billion, two hundred twenty million, three hundred twenty-two thousand, two".