1212199340659 has 2 divisors, whose sum is σ = 1212199340660. Its totient is φ = 1212199340658.

The previous prime is 1212199340633. The next prime is 1212199340717. The reversal of 1212199340659 is 9560439912121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212199340659 - 2¹³ = 1212199332467 is a prime.

It is a super-2 number, since 2×1212199340659² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212199340159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606099670329 + 606099670330.

It is an arithmetic number, because the mean of its divisors is an integer number (606099670330).

Almost surely, 2^{1212199340659} is an apocalyptic number.

1212199340659 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212199340659 is an equidigital number, since it uses as much as digits as its factorization.

1212199340659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 52.

The spelling of 1212199340659 in words is "one trillion, two hundred twelve billion, one hundred ninety-nine million, three hundred forty thousand, six hundred fifty-nine".