7222281 has 8 divisors (see below), whose sum is σ = 10505184. Its totient is φ = 4377120.

The previous prime is 7222279. The next prime is 7222291. The reversal of 7222281 is 1822227.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7222281 - 2¹ = 7222279 is a prime.

It is a super-2 number, since 2×7222281² = 104322685685922, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7222291) 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, 109396 + ... + 109461.

It is an arithmetic number, because the mean of its divisors is an integer number (1313148).

Almost surely, 2^7222281 is an apocalyptic number.

It is an amenable number.

7222281 is a deficient number, since it is larger than the sum of its proper divisors (3282903).

7222281 is a wasteful number, since it uses less digits than its factorization.

7222281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218871.

The product of its digits is 896, while the sum is 24.

The square root of 7222281 is about 2687.4301851397. The cubic root of 7222281 is about 193.2968576318.

It can be divided in two parts, 7222 and 281, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 7222281 in words is "seven million, two hundred twenty-two thousand, two hundred eighty-one".