1212043013 has 2 divisors, whose sum is σ = 1212043014. Its totient is φ = 1212043012.

The previous prime is 1212042989. The next prime is 1212043031. The reversal of 1212043013 is 3103402121.

Together with next prime (1212043031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1009777729 + 202265284 = 31777^2 + 14222^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212043013 - 2¹² = 1212038917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212042982 and 1212043000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212043093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606021506 + 606021507.

It is an arithmetic number, because the mean of its divisors is an integer number (606021507).

Almost surely, 2^1212043013 is an apocalyptic number.

It is an amenable number.

1212043013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212043013 is an equidigital number, since it uses as much as digits as its factorization.

1212043013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1212043013 is about 34814.4081236490. The cubic root of 1212043013 is about 1066.2016348668.

Adding to 1212043013 its reverse (3103402121), we get a palindrome (4315445134).

The spelling of 1212043013 in words is "one billion, two hundred twelve million, forty-three thousand, thirteen".