7121227 has 4 divisors (see below), whose sum is σ = 7350976. Its totient is φ = 6891480.

The previous prime is 7121209. The next prime is 7121263. The reversal of 7121227 is 7221217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7221217 = 743 ⋅9719.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7121227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7121198 and 7121207.

It is not an unprimeable number, because it can be changed into a prime (7121267) 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, 114828 + ... + 114889.

It is an arithmetic number, because the mean of its divisors is an integer number (1837744).

Almost surely, 2^7121227 is an apocalyptic number.

7121227 is a deficient number, since it is larger than the sum of its proper divisors (229749).

7121227 is a wasteful number, since it uses less digits than its factorization.

7121227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229748.

The product of its digits is 392, while the sum is 22.

The square root of 7121227 is about 2668.5627217662. The cubic root of 7121227 is about 192.3910847309.

The spelling of 7121227 in words is "seven million, one hundred twenty-one thousand, two hundred twenty-seven".