1212023123 has 2 divisors, whose sum is σ = 1212023124. Its totient is φ = 1212023122.

The previous prime is 1212023083. The next prime is 1212023173. The reversal of 1212023123 is 3213202121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212023123 - 2¹⁴ = 1212006739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212023173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606011561 + 606011562.

It is an arithmetic number, because the mean of its divisors is an integer number (606011562).

Almost surely, 2^1212023123 is an apocalyptic number.

1212023123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212023123 is an equidigital number, since it uses as much as digits as its factorization.

1212023123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1212023123 is about 34814.1224648849. The cubic root of 1212023123 is about 1066.1958026022.

Adding to 1212023123 its reverse (3213202121), we get a palindrome (4425225244).

The spelling of 1212023123 in words is "one billion, two hundred twelve million, twenty-three thousand, one hundred twenty-three".