1220055002 has 4 divisors (see below), whose sum is σ = 1830082506. Its totient is φ = 610027500.

The previous prime is 1220054989. The next prime is 1220055049. The reversal of 1220055002 is 2005500221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2005500221 = 277 ⋅7240073.

It can be written as a sum of positive squares in only one way, i.e., 1206798121 + 13256881 = 34739^2 + 3641^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305013749 + ... + 305013752.

Almost surely, 2^1220055002 is an apocalyptic number.

1220055002 is a deficient number, since it is larger than the sum of its proper divisors (610027504).

1220055002 is an equidigital number, since it uses as much as digits as its factorization.

1220055002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610027503.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1220055002 is about 34929.2857356116. The cubic root of 1220055002 is about 1068.5457876322.

Adding to 1220055002 its reverse (2005500221), we get a palindrome (3225555223).

The spelling of 1220055002 in words is "one billion, two hundred twenty million, fifty-five thousand, two".