1210123123 has 16 divisors (see below), whose sum is σ = 1336262400. Its totient is φ = 1086734880.

The previous prime is 1210123097. The next prime is 1210123139. The reversal of 1210123123 is 3213210121.

It is not a de Polignac number, because 1210123123 - 2²¹ = 1208025971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210123097 and 1210123106.

It is not an unprimeable number, because it can be changed into a prime (1210123163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453090 + ... + 455752.

It is an arithmetic number, because the mean of its divisors is an integer number (83516400).

Almost surely, 2^1210123123 is an apocalyptic number.

1210123123 is a deficient number, since it is larger than the sum of its proper divisors (126139277).

1210123123 is a wasteful number, since it uses less digits than its factorization.

1210123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1210123123 is about 34786.8239855265. The cubic root of 1210123123 is about 1065.6383788312.

Adding to 1210123123 its reverse (3213210121), we get a palindrome (4423333244).

The spelling of 1210123123 in words is "one billion, two hundred ten million, one hundred twenty-three thousand, one hundred twenty-three".