1222129474 has 4 divisors (see below), whose sum is σ = 1833194214. Its totient is φ = 611064736.

The previous prime is 1222129453. The next prime is 1222129483. The reversal of 1222129474 is 4749212221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4749212221 = 13 ⋅365324017.

It can be written as a sum of positive squares in only one way, i.e., 815502249 + 406627225 = 28557^2 + 20165^2 .

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 as a sum of consecutive naturals, namely, 305532367 + ... + 305532370.

Almost surely, 2^1222129474 is an apocalyptic number.

1222129474 is a deficient number, since it is larger than the sum of its proper divisors (611064740).

1222129474 is an equidigital number, since it uses as much as digits as its factorization.

1222129474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611064739.

The product of its digits is 16128, while the sum is 34.

The square root of 1222129474 is about 34958.9684344375. The cubic root of 1222129474 is about 1069.1510644866.

The spelling of 1222129474 in words is "one billion, two hundred twenty-two million, one hundred twenty-nine thousand, four hundred seventy-four".