1210055123 has 2 divisors, whose sum is σ = 1210055124. Its totient is φ = 1210055122.

The previous prime is 1210055089. The next prime is 1210055129. The reversal of 1210055123 is 3215500121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210055123 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210055095 and 1210055104.

It is not a weakly prime, because it can be changed into another prime (1210055129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605027561 + 605027562.

It is an arithmetic number, because the mean of its divisors is an integer number (605027562).

Almost surely, 2^1210055123 is an apocalyptic number.

1210055123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210055123 is an equidigital number, since it uses as much as digits as its factorization.

1210055123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1210055123 is about 34785.8465902441. The cubic root of 1210055123 is about 1065.6184181165.

Adding to 1210055123 its reverse (3215500121), we get a palindrome (4425555244).

The spelling of 1210055123 in words is "one billion, two hundred ten million, fifty-five thousand, one hundred twenty-three".