1222238945 has 16 divisors (see below), whose sum is σ = 1515073680. Its totient is φ = 945840384.

The previous prime is 1222238939. The next prime is 1222238947. The reversal of 1222238945 is 5498322221.

It can be written as a sum of positive squares in 8 ways, for example, as 31091776 + 1191147169 = 5576^2 + 34513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222238945 - 2¹⁶ = 1222173409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222238899 and 1222238908.

It is not an unprimeable number, because it can be changed into a prime (1222238947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12911 + ... + 51099.

It is an arithmetic number, because the mean of its divisors is an integer number (94692105).

Almost surely, 2^1222238945 is an apocalyptic number.

It is an amenable number.

1222238945 is a deficient number, since it is larger than the sum of its proper divisors (292834735).

1222238945 is a wasteful number, since it uses less digits than its factorization.

1222238945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38404.

The product of its digits is 69120, while the sum is 38.

The square root of 1222238945 is about 34960.5341063320. The cubic root of 1222238945 is about 1069.1829862385.

The spelling of 1222238945 in words is "one billion, two hundred twenty-two million, two hundred thirty-eight thousand, nine hundred forty-five".