120021002019 has 8 divisors (see below), whose sum is σ = 177808891920. Its totient is φ = 80014001328.

The previous prime is 120021001981. The next prime is 120021002039. The reversal of 120021002019 is 910200120021.

It is not a de Polignac number, because 120021002019 - 2¹⁷ = 120020870947 is a prime.

It is a super-2 number, since 2×120021002019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120021001992 and 120021002010.

It is not an unprimeable number, because it can be changed into a prime (120021002039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222611122 + ... + 2222611175.

It is an arithmetic number, because the mean of its divisors is an integer number (22226111490).

Almost surely, 2^120021002019 is an apocalyptic number.

120021002019 is a deficient number, since it is larger than the sum of its proper divisors (57787889901).

120021002019 is an equidigital number, since it uses as much as digits as its factorization.

120021002019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445222306 (or 4445222300 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 120021002019 in words is "one hundred twenty billion, twenty-one million, two thousand, nineteen".