1213222134 has 32 divisors (see below), whose sum is σ = 2521451520. Its totient is φ = 388698912.

The previous prime is 1213222123. The next prime is 1213222141. The reversal of 1213222134 is 4312223121.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213222134.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23169 + ... + 54435.

It is an arithmetic number, because the mean of its divisors is an integer number (78795360).

Almost surely, 2^1213222134 is an apocalyptic number.

1213222134 is an abundant number, since it is smaller than the sum of its proper divisors (1308229386).

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

1213222134 is a wasteful number, since it uses less digits than its factorization.

1213222134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31524.

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

The square root of 1213222134 is about 34831.3383894446. The cubic root of 1213222134 is about 1066.5472698173.

Adding to 1213222134 its reverse (4312223121), we get a palindrome (5525445255).

The spelling of 1213222134 in words is "one billion, two hundred thirteen million, two hundred twenty-two thousand, one hundred thirty-four".