102202019 has 4 divisors (see below), whose sum is σ = 102773160. Its totient is φ = 101630880.

The previous prime is 102201991. The next prime is 102202021. The reversal of 102202019 is 910202201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910202201 = 19 ⋅47905379.

It is a cyclic number.

It is not a de Polignac number, because 102202019 - 2⁸ = 102201763 is a prime.

It is a super-2 number, since 2×102202019² = 20890505375352722, 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 = 102201988 and 102202006.

It is not an unprimeable number, because it can be changed into a prime (102202039) 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, 285302 + ... + 285659.

It is an arithmetic number, because the mean of its divisors is an integer number (25693290).

Almost surely, 2^102202019 is an apocalyptic number.

102202019 is a deficient number, since it is larger than the sum of its proper divisors (571141).

102202019 is an equidigital number, since it uses as much as digits as its factorization.

102202019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571140.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 102202019 is about 10109.5014219298. The cubic root of 102202019 is about 467.5411331972.

The spelling of 102202019 in words is "one hundred two million, two hundred two thousand, nineteen".