120121210219 has 4 divisors (see below), whose sum is σ = 123996088000. Its totient is φ = 116246332440.

The previous prime is 120121210217. The next prime is 120121210241. The reversal of 120121210219 is 912012121021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912012121021 = 151 ⋅6039815371.

It is a cyclic number.

It is not a de Polignac number, because 120121210219 - 2¹ = 120121210217 is a prime.

It is a super-2 number, since 2×120121210219² (a number of 23 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 120121210219.

It is not an unprimeable number, because it can be changed into a prime (120121210217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937438844 + ... + 1937438905.

It is an arithmetic number, because the mean of its divisors is an integer number (30999022000).

Almost surely, 2^120121210219 is an apocalyptic number.

120121210219 is a deficient number, since it is larger than the sum of its proper divisors (3874877781).

120121210219 is an equidigital number, since it uses as much as digits as its factorization.

120121210219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874877780.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 120121210219 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred ten thousand, two hundred nineteen".