212228827 has 2 divisors, whose sum is σ = 212228828. Its totient is φ = 212228826.

The previous prime is 212228791. The next prime is 212228837. The reversal of 212228827 is 728822212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212228827 - 2¹⁵ = 212196059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212228792 and 212228801.

It is not a weakly prime, because it can be changed into another prime (212228837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106114413 + 106114414.

It is an arithmetic number, because the mean of its divisors is an integer number (106114414).

Almost surely, 2^212228827 is an apocalyptic number.

212228827 is a deficient number, since it is larger than the sum of its proper divisors (1).

212228827 is an equidigital number, since it uses as much as digits as its factorization.

212228827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 34.

The square root of 212228827 is about 14568.0756107318. The cubic root of 212228827 is about 596.4876522915.

The spelling of 212228827 in words is "two hundred twelve million, two hundred twenty-eight thousand, eight hundred twenty-seven".