1222388073 has 6 divisors (see below), whose sum is σ = 1765671674. Its totient is φ = 814925376.

The previous prime is 1222388059. The next prime is 1222388087. The reversal of 1222388073 is 3708832221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1222388059) and next prime (1222388087).

It can be written as a sum of positive squares in only one way, i.e., 806105664 + 416282409 = 28392^2 + 20403^2 .

It is not a de Polignac number, because 1222388073 - 2¹² = 1222383977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222388003) 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, 67910440 + ... + 67910457.

Almost surely, 2^1222388073 is an apocalyptic number.

It is an amenable number.

1222388073 is a deficient number, since it is larger than the sum of its proper divisors (543283601).

1222388073 is a wasteful number, since it uses less digits than its factorization.

1222388073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135820903 (or 135820900 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1222388073 is about 34962.6668462233. Note that the first 3 decimals coincide. The cubic root of 1222388073 is about 1069.2264689080.

The spelling of 1222388073 in words is "one billion, two hundred twenty-two million, three hundred eighty-eight thousand, seventy-three".