227142428291 has 2 divisors, whose sum is σ = 227142428292. Its totient is φ = 227142428290.

The previous prime is 227142428237. The next prime is 227142428297. The reversal of 227142428291 is 192824241722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227142428291 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (227142428297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113571214145 + 113571214146.

It is an arithmetic number, because the mean of its divisors is an integer number (113571214146).

Almost surely, 2^227142428291 is an apocalyptic number.

227142428291 is a deficient number, since it is larger than the sum of its proper divisors (1).

227142428291 is an equidigital number, since it uses as much as digits as its factorization.

227142428291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 44.

The spelling of 227142428291 in words is "two hundred twenty-seven billion, one hundred forty-two million, four hundred twenty-eight thousand, two hundred ninety-one".