120021210019 has 4 divisors (see below), whose sum is σ = 123265026544. Its totient is φ = 116777393496.

The previous prime is 120021210007. The next prime is 120021210061. The reversal of 120021210019 is 910012120021.

It is a happy number.

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 120021210019 - 2²¹ = 120019112867 is a prime.

It is a super-2 number, since 2×120021210019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021209978 and 120021210005.

It is not an unprimeable number, because it can be changed into a prime (120021210319) 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, 1621908207 + ... + 1621908280.

It is an arithmetic number, because the mean of its divisors is an integer number (30816256636).

Almost surely, 2^120021210019 is an apocalyptic number.

120021210019 is a deficient number, since it is larger than the sum of its proper divisors (3243816525).

120021210019 is an equidigital number, since it uses as much as digits as its factorization.

120021210019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243816524.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 120021210019 in words is "one hundred twenty billion, twenty-one million, two hundred ten thousand, nineteen".