1212020110139 has 2 divisors, whose sum is σ = 1212020110140. Its totient is φ = 1212020110138.

The previous prime is 1212020110031. The next prime is 1212020110151. The reversal of 1212020110139 is 9310110202121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212020110139 - 2⁴⁰ = 112508482363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212020160139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606010055069 + 606010055070.

It is an arithmetic number, because the mean of its divisors is an integer number (606010055070).

Almost surely, 2^{1212020110139} is an apocalyptic number.

1212020110139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212020110139 is an equidigital number, since it uses as much as digits as its factorization.

1212020110139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 1212020110139 in words is "one trillion, two hundred twelve billion, twenty million, one hundred ten thousand, one hundred thirty-nine".