2101019 has 2 divisors, whose sum is σ = 2101020. Its totient is φ = 2101018.

The previous prime is 2101007. The next prime is 2101051. The reversal of 2101019 is 9101012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101019 - 2⁴ = 2101003 is a prime.

It is a super-2 number, since 2×2101019² = 8828561676722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100994 and 2101012.

It is not a weakly prime, because it can be changed into another prime (2101219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050509 + 1050510.

It is an arithmetic number, because the mean of its divisors is an integer number (1050510).

2^2101019 is an apocalyptic number.

2101019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101019 is an equidigital number, since it uses as much as digits as its factorization.

2101019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 2101019 is about 1449.4892203808. The cubic root of 2101019 is about 128.0786260093.

The spelling of 2101019 in words is "two million, one hundred one thousand, nineteen".