7222019 has 4 divisors (see below), whose sum is σ = 8253744. Its totient is φ = 6190296.

The previous prime is 7222009. The next prime is 7222021. The reversal of 7222019 is 9102227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9102227 = 23 ⋅395749.

It is a de Polignac number, because none of the positive numbers 2^k-7222019 is a prime.

It is a super-2 number, since 2×7222019² = 104315116872722, 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 = 7221985 and 7222003.

It is not an unprimeable number, because it can be changed into a prime (7222009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515852 + ... + 515865.

It is an arithmetic number, because the mean of its divisors is an integer number (2063436).

Almost surely, 2^7222019 is an apocalyptic number.

7222019 is a deficient number, since it is larger than the sum of its proper divisors (1031725).

7222019 is a wasteful number, since it uses less digits than its factorization.

7222019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031724.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 7222019 is about 2687.3814392453. The cubic root of 7222019 is about 193.2945202175.

The spelling of 7222019 in words is "seven million, two hundred twenty-two thousand, nineteen".