121321030120019 has 4 divisors (see below), whose sum is σ = 121323602653560. Its totient is φ = 121318457586480.

The previous prime is 121321030119943. The next prime is 121321030120093. The reversal of 121321030120019 is 910021030123121.

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 121321030120019 - 2³⁶ = 121252310643283 is a prime.

It is a super-2 number, since 2×121321030120019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121321030120019.

It is not an unprimeable number, because it can be changed into a prime (121321030120219) 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, 1286196029 + ... + 1286290350.

It is an arithmetic number, because the mean of its divisors is an integer number (30330900663390).

Almost surely, 2^{121321030120019} is an apocalyptic number.

121321030120019 is a deficient number, since it is larger than the sum of its proper divisors (2572533541).

121321030120019 is an equidigital number, since it uses as much as digits as its factorization.

121321030120019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572533540.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 121321030120019 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, thirty million, one hundred twenty thousand, nineteen".