1222021834 has 12 divisors (see below), whose sum is σ = 2014821522. Its totient is φ = 555464360.

The previous prime is 1222021819. The next prime is 1222021837. The reversal of 1222021834 is 4381202221.

It can be written as a sum of positive squares in only one way, i.e., 1166564025 + 55457809 = 34155^2 + 7447^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1222021799 and 1222021808.

It is not an unprimeable number, because it can be changed into a prime (1222021837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2524597 + ... + 2525080.

Almost surely, 2^1222021834 is an apocalyptic number.

1222021834 is a deficient number, since it is larger than the sum of its proper divisors (792799688).

1222021834 is a wasteful number, since it uses less digits than its factorization.

1222021834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049701 (or 5049690 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1222021834 is about 34957.4288814266. The cubic root of 1222021834 is about 1069.1196747956.

The spelling of 1222021834 in words is "one billion, two hundred twenty-two million, twenty-one thousand, eight hundred thirty-four".