1212124123 has 24 divisors (see below), whose sum is σ = 1529421264. Its totient is φ = 953971200.

The previous prime is 1212124073. The next prime is 1212124139. The reversal of 1212124123 is 3214212121.

It is a de Polignac number, because none of the positive numbers 2^k-1212124123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212124123.

It is not an unprimeable number, because it can be changed into a prime (1212124153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16408 + ... + 51898.

It is an arithmetic number, because the mean of its divisors is an integer number (63725886).

Almost surely, 2^1212124123 is an apocalyptic number.

1212124123 is a deficient number, since it is larger than the sum of its proper divisors (317297141).

1212124123 is a wasteful number, since it uses less digits than its factorization.

1212124123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35563 (or 35556 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 1212124123 is about 34815.5729954284. The cubic root of 1212124123 is about 1066.2254177646.

Adding to 1212124123 its reverse (3214212121), we get a palindrome (4426336244).

The spelling of 1212124123 in words is "one billion, two hundred twelve million, one hundred twenty-four thousand, one hundred twenty-three".