1222220939 has 2 divisors, whose sum is σ = 1222220940. Its totient is φ = 1222220938.

The previous prime is 1222220917. The next prime is 1222220971. The reversal of 1222220939 is 9390222221.

It is a happy number.

It is an a-pointer prime, because the next prime (1222220971) can be obtained adding 1222220939 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222220939 - 2¹² = 1222216843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222220639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611110469 + 611110470.

It is an arithmetic number, because the mean of its divisors is an integer number (611110470).

Almost surely, 2^1222220939 is an apocalyptic number.

1222220939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222220939 is an equidigital number, since it uses as much as digits as its factorization.

1222220939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1222220939 is about 34960.2765864345. The cubic root of 1222220939 is about 1069.1777358185.

The spelling of 1222220939 in words is "one billion, two hundred twenty-two million, two hundred twenty thousand, nine hundred thirty-nine".