1213210003 has 8 divisors (see below), whose sum is σ = 1277575200. Its totient is φ = 1149812928.

The previous prime is 1213209973. The next prime is 1213210007. The reversal of 1213210003 is 3000123121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213210003 - 2¹³ = 1213201811 is a prime.

It is a super-2 number, since 2×1213210003² = 2943757022758520018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213210007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239458 + ... + 244471.

It is an arithmetic number, because the mean of its divisors is an integer number (159696900).

Almost surely, 2^1213210003 is an apocalyptic number.

1213210003 is a deficient number, since it is larger than the sum of its proper divisors (64365197).

1213210003 is a wasteful number, since it uses less digits than its factorization.

1213210003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484061.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1213210003 is about 34831.1642498496. The cubic root of 1213210003 is about 1066.5437150058.

Adding to 1213210003 its reverse (3000123121), we get a palindrome (4213333124).

The spelling of 1213210003 in words is "one billion, two hundred thirteen million, two hundred ten thousand, three".