1221333002 has 8 divisors (see below), whose sum is σ = 1834091076. Its totient is φ = 609969312.

The previous prime is 1221332993. The next prime is 1221333011. The reversal of 1221333002 is 2003331221.

It is an interprime number because it is at equal distance from previous prime (1221332993) and next prime (1221333011).

It can be written as a sum of positive squares in 2 ways, for example, as 1074462841 + 146870161 = 32779^2 + 12119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 346403 + ... + 349910.

Almost surely, 2^1221333002 is an apocalyptic number.

1221333002 is a deficient number, since it is larger than the sum of its proper divisors (612758074).

1221333002 is an equidigital number, since it uses as much as digits as its factorization.

1221333002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697192.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1221333002 is about 34947.5750517829. The cubic root of 1221333002 is about 1068.9187557831.

Adding to 1221333002 its reverse (2003331221), we get a palindrome (3224664223).

The spelling of 1221333002 in words is "one billion, two hundred twenty-one million, three hundred thirty-three thousand, two".