2120101019 has 4 divisors (see below), whose sum is σ = 2122519344. Its totient is φ = 2117682696.

The previous prime is 2120101003. The next prime is 2120101031. The reversal of 2120101019 is 9101010212.

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 2120101019 - 2⁴ = 2120101003 is a prime.

It is a super-2 number, since 2×2120101019² = 8989656661529676722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120100988 and 2120101006.

It is not an unprimeable number, because it can be changed into a prime (2120101069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207847 + ... + 1209600.

It is an arithmetic number, because the mean of its divisors is an integer number (530629836).

Almost surely, 2^2120101019 is an apocalyptic number.

2120101019 is a deficient number, since it is larger than the sum of its proper divisors (2418325).

2120101019 is an equidigital number, since it uses as much as digits as its factorization.

2120101019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418324.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 2120101019 is about 46044.5547160574. The cubic root of 2120101019 is about 1284.6520618232.

It can be divided in two parts, 2 and 120101019, that added together give a palindrome (120101021).

The spelling of 2120101019 in words is "two billion, one hundred twenty million, one hundred one thousand, nineteen".