1212310123 has 8 divisors (see below), whose sum is σ = 1230792192. Its totient is φ = 1193967936.

The previous prime is 1212310117. The next prime is 1212310133. The reversal of 1212310123 is 3210132121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212310123 - 2²⁵ = 1178755691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212310097 and 1212310106.

It is not an unprimeable number, because it can be changed into a prime (1212310133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17440 + ... + 52237.

It is an arithmetic number, because the mean of its divisors is an integer number (153849024).

Almost surely, 2^1212310123 is an apocalyptic number.

1212310123 is a deficient number, since it is larger than the sum of its proper divisors (18482069).

1212310123 is a wasteful number, since it uses less digits than its factorization.

1212310123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69941.

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

The square root of 1212310123 is about 34818.2441113851. The cubic root of 1212310123 is about 1066.2799522744.

Adding to 1212310123 its reverse (3210132121), we get a palindrome (4422442244).

The spelling of 1212310123 in words is "one billion, two hundred twelve million, three hundred ten thousand, one hundred twenty-three".