1222122013 has 4 divisors (see below), whose sum is σ = 1396710880. Its totient is φ = 1047533148.

The previous prime is 1222122001. The next prime is 1222122017. The reversal of 1222122013 is 3102212221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3102212221 = 1153 ⋅2690557.

It is a cyclic number.

It is not a de Polignac number, because 1222122013 - 2⁹ = 1222121501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222122017) 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 3 ways as a sum of consecutive naturals, for example, 87294423 + ... + 87294436.

It is an arithmetic number, because the mean of its divisors is an integer number (349177720).

Almost surely, 2^1222122013 is an apocalyptic number.

It is an amenable number.

1222122013 is a deficient number, since it is larger than the sum of its proper divisors (174588867).

1222122013 is an equidigital number, since it uses as much as digits as its factorization.

1222122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174588866.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1222122013 is about 34958.8617234600. The cubic root of 1222122013 is about 1069.1488887890.

Adding to 1222122013 its reverse (3102212221), we get a palindrome (4324334234).

The spelling of 1222122013 in words is "one billion, two hundred twenty-two million, one hundred twenty-two thousand, thirteen".