1212003013 has 8 divisors (see below), whose sum is σ = 1323114968. Its totient is φ = 1103445504.

The previous prime is 1212002977. The next prime is 1212003041. The reversal of 1212003013 is 3103002121.

It can be written as a sum of positive squares in 4 ways, for example, as 121484484 + 1090518529 = 11022^2 + 33023^2 .

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 1212003013 - 2²⁵ = 1178448581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212002984 and 1212003002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212003073) 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, 637620 + ... + 639517.

It is an arithmetic number, because the mean of its divisors is an integer number (165389371).

Almost surely, 2^1212003013 is an apocalyptic number.

1212003013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1212003013 is a deficient number, since it is larger than the sum of its proper divisors (111111955).

1212003013 is a wasteful number, since it uses less digits than its factorization.

1212003013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277223.

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

The square root of 1212003013 is about 34813.8336441134. The cubic root of 1212003013 is about 1066.1899057631.

Adding to 1212003013 its reverse (3103002121), we get a palindrome (4315005134).

The spelling of 1212003013 in words is "one billion, two hundred twelve million, three thousand, thirteen".