1213210008 has 64 divisors (see below), whose sum is σ = 3452248800. Its totient is φ = 394536960.

The previous prime is 1213210007. The next prime is 1213210039. The reversal of 1213210008 is 8000123121.

It is a super-2 number, since 2×1213210008² = 2943757047022720128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213210007) 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 15 ways as a sum of consecutive naturals, for example, 59641 + ... + 77352.

Almost surely, 2^1213210008 is an apocalyptic number.

1213210008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1213210008 is an abundant number, since it is smaller than the sum of its proper divisors (2239038792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213210008 is a wasteful number, since it uses less digits than its factorization.

1213210008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137049 (or 137039 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1213210008 is about 34831.1643216244. The cubic root of 1213210008 is about 1066.5437164710.

Adding to 1213210008 its reverse (8000123121), we get a palindrome (9213333129).

The spelling of 1213210008 in words is "one billion, two hundred thirteen million, two hundred ten thousand, eight".