2227145771 has 4 divisors (see below), whose sum is σ = 2227474944. Its totient is φ = 2226816600.

The previous prime is 2227145749. The next prime is 2227145777. The reversal of 2227145771 is 1775417222.

2227145771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1775417222 = 2 ⋅887708611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2227145771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2227145777) 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, 154220 + ... + 168041.

It is an arithmetic number, because the mean of its divisors is an integer number (556868736).

Almost surely, 2^2227145771 is an apocalyptic number.

2227145771 is a deficient number, since it is larger than the sum of its proper divisors (329173).

2227145771 is an equidigital number, since it uses as much as digits as its factorization.

2227145771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329172.

The product of its digits is 54880, while the sum is 38.

The square root of 2227145771 is about 47192.6453062339. The cubic root of 2227145771 is about 1305.9189215919.

The spelling of 2227145771 in words is "two billion, two hundred twenty-seven million, one hundred forty-five thousand, seven hundred seventy-one".