1213211002 has 8 divisors (see below), whose sum is σ = 1820342196. Its totient is φ = 606430272.

The previous prime is 1213210993. The next prime is 1213211003. The reversal of 1213211002 is 2001123121.

It can be written as a sum of positive squares in 2 ways, for example, as 1212362761 + 848241 = 34819^2 + 921^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1213211003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78783 + ... + 92914.

Almost surely, 2^1213211002 is an apocalyptic number.

1213211002 is a deficient number, since it is larger than the sum of its proper divisors (607131194).

1213211002 is a wasteful number, since it uses less digits than its factorization.

1213211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175232.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1213211002 is about 34831.1785904525. The cubic root of 1213211002 is about 1066.5440077490.

Adding to 1213211002 its reverse (2001123121), we get a palindrome (3214334123).

It can be divided in two parts, 121 and 3211002, that added together give a palindrome (3211123).

The spelling of 1213211002 in words is "one billion, two hundred thirteen million, two hundred eleven thousand, two".