1210020121259 has 2 divisors, whose sum is σ = 1210020121260. Its totient is φ = 1210020121258.

The previous prime is 1210020121199. The next prime is 1210020121267. The reversal of 1210020121259 is 9521210200121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210020121259 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1210020121459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605010060629 + 605010060630.

It is an arithmetic number, because the mean of its divisors is an integer number (605010060630).

Almost surely, 2^{1210020121259} is an apocalyptic number.

1210020121259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210020121259 is an equidigital number, since it uses as much as digits as its factorization.

1210020121259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 1210020121259 in words is "one trillion, two hundred ten billion, twenty million, one hundred twenty-one thousand, two hundred fifty-nine".