1212020110019 has 4 divisors (see below), whose sum is σ = 1212516638520. Its totient is φ = 1211523581520.

The previous prime is 1212020109961. The next prime is 1212020110031. The reversal of 1212020110019 is 9100110202121.

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 1212020110019 - 2⁸ = 1212020109763 is a prime.

It is a super-2 number, since 2×1212020110019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212020110219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248260589 + ... + 248265470.

It is an arithmetic number, because the mean of its divisors is an integer number (303129159630).

Almost surely, 2^{1212020110019} is an apocalyptic number.

1212020110019 is a deficient number, since it is larger than the sum of its proper divisors (496528501).

1212020110019 is an equidigital number, since it uses as much as digits as its factorization.

1212020110019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496528500.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1212020110019 in words is "one trillion, two hundred twelve billion, twenty million, one hundred ten thousand, nineteen".