1213223124 has 12 divisors (see below), whose sum is σ = 2830853984. Its totient is φ = 404407704.

The previous prime is 1213223117. The next prime is 1213223147. The reversal of 1213223124 is 4213223121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1213223124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50550952 + ... + 50550975.

Almost surely, 2^1213223124 is an apocalyptic number.

It is an amenable number.

1213223124 is an abundant number, since it is smaller than the sum of its proper divisors (1617630860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213223124 is a wasteful number, since it uses less digits than its factorization.

1213223124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101101934 (or 101101932 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1213223124 is about 34831.3526007820. The cubic root of 1213223124 is about 1066.5475599212.

Adding to 1213223124 its reverse (4213223121), we get a palindrome (5426446245).

The spelling of 1213223124 in words is "one billion, two hundred thirteen million, two hundred twenty-three thousand, one hundred twenty-four".