1212216859059 has 4 divisors (see below), whose sum is σ = 1616289145416. Its totient is φ = 808144572704.

The previous prime is 1212216859043. The next prime is 1212216859079. The reversal of 1212216859059 is 9509586122121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212216859059 - 2⁴ = 1212216859043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212216859039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202036143174 + ... + 202036143179.

It is an arithmetic number, because the mean of its divisors is an integer number (404072286354).

Almost surely, 2^{1212216859059} is an apocalyptic number.

1212216859059 is a deficient number, since it is larger than the sum of its proper divisors (404072286357).

1212216859059 is an equidigital number, since it uses as much as digits as its factorization.

1212216859059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404072286356.

The product of its (nonzero) digits is 777600, while the sum is 51.

The spelling of 1212216859059 in words is "one trillion, two hundred twelve billion, two hundred sixteen million, eight hundred fifty-nine thousand, fifty-nine".