1321212103307 has 2 divisors, whose sum is σ = 1321212103308. Its totient is φ = 1321212103306.

The previous prime is 1321212103249. The next prime is 1321212103319. The reversal of 1321212103307 is 7033012121231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321212103307 - 2¹⁴ = 1321212086923 is a prime.

It is a super-3 number, since 3×1321212103307³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1321212103397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660606051653 + 660606051654.

It is an arithmetic number, because the mean of its divisors is an integer number (660606051654).

Almost surely, 2^{1321212103307} is an apocalyptic number.

1321212103307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321212103307 is an equidigital number, since it uses as much as digits as its factorization.

1321212103307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 1321212103307 its reverse (7033012121231), we get a palindrome (8354224224538).

The spelling of 1321212103307 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, one hundred three thousand, three hundred seven".