1220827427 has 2 divisors, whose sum is σ = 1220827428. Its totient is φ = 1220827426.

The previous prime is 1220827423. The next prime is 1220827429. The reversal of 1220827427 is 7247280221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220827427 - 2² = 1220827423 is a prime.

Together with 1220827429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1220827423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610413713 + 610413714.

It is an arithmetic number, because the mean of its divisors is an integer number (610413714).

Almost surely, 2^1220827427 is an apocalyptic number.

1220827427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220827427 is an equidigital number, since it uses as much as digits as its factorization.

1220827427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 1220827427 is about 34940.3409685710. The cubic root of 1220827427 is about 1068.7712412271.

The spelling of 1220827427 in words is "one billion, two hundred twenty million, eight hundred twenty-seven thousand, four hundred twenty-seven".