120212121212021 has 4 divisors (see below), whose sum is σ = 120412809228000. Its totient is φ = 120011433196044.

The previous prime is 120212121211993. The next prime is 120212121212047.

120212121212021 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120212121212021 - 2¹⁰ = 120212121210997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120212121211984 and 120212121212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212121112021) 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, 100344007091 + ... + 100344008288.

It is an arithmetic number, because the mean of its divisors is an integer number (30103202307000).

Almost surely, 2^{120212121212021} is an apocalyptic number.

It is an amenable number.

120212121212021 is a deficient number, since it is larger than the sum of its proper divisors (200688015979).

120212121212021 is an equidigital number, since it uses as much as digits as its factorization.

120212121212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200688015978.

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 120212121212021 in words is "one hundred twenty trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, twenty-one".