1228105051 has 2 divisors, whose sum is σ = 1228105052. Its totient is φ = 1228105050.

The previous prime is 1228105049. The next prime is 1228105057. The reversal of 1228105051 is 1505018221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1228105051 - 2¹ = 1228105049 is a prime.

Together with 1228105049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1228105057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614052525 + 614052526.

It is an arithmetic number, because the mean of its divisors is an integer number (614052526).

Almost surely, 2^1228105051 is an apocalyptic number.

1228105051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228105051 is an equidigital number, since it uses as much as digits as its factorization.

1228105051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 1228105051 is about 35044.3297981285. The cubic root of 1228105051 is about 1070.8907628880.

The spelling of 1228105051 in words is "one billion, two hundred twenty-eight million, one hundred five thousand, fifty-one".