1213210422 has 24 divisors (see below), whose sum is σ = 2633669064. Its totient is φ = 403627104.

The previous prime is 1213210393. The next prime is 1213210429. The reversal of 1213210422 is 2240123121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1213210395 and 1213210404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213210429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55023 + ... + 73850.

It is an arithmetic number, because the mean of its divisors is an integer number (109736211).

Almost surely, 2^1213210422 is an apocalyptic number.

1213210422 is an abundant number, since it is smaller than the sum of its proper divisors (1420458642).

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

1213210422 is a wasteful number, since it uses less digits than its factorization.

1213210422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129404 (or 129401 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1213210422 is about 34831.1702645777. The cubic root of 1213210422 is about 1066.5438377880.

Adding to 1213210422 its reverse (2240123121), we get a palindrome (3453333543).

The spelling of 1213210422 in words is "one billion, two hundred thirteen million, two hundred ten thousand, four hundred twenty-two".