1212211110259 has 2 divisors, whose sum is σ = 1212211110260. Its totient is φ = 1212211110258.

The previous prime is 1212211110139. The next prime is 1212211110287. The reversal of 1212211110259 is 9520111122121.

It is an a-pointer prime, because the next prime (1212211110287) can be obtained adding 1212211110259 to its sum of digits (28).

It is a strong prime.

It is an emirp because it is prime and its reverse (9520111122121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212211110259 - 2²³ = 1212202721651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212211110289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105555129 + 606105555130.

It is an arithmetic number, because the mean of its divisors is an integer number (606105555130).

Almost surely, 2^{1212211110259} is an apocalyptic number.

1212211110259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212211110259 is an equidigital number, since it uses as much as digits as its factorization.

1212211110259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 28.

The spelling of 1212211110259 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred ten thousand, two hundred fifty-nine".