1222006993 has 2 divisors, whose sum is σ = 1222006994. Its totient is φ = 1222006992.

The previous prime is 1222006991. The next prime is 1222007027. The reversal of 1222006993 is 3996002221.

It is an a-pointer prime, because the next prime (1222007027) can be obtained adding 1222006993 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 918271809 + 303735184 = 30303^2 + 17428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222006993 - 2¹ = 1222006991 is a prime.

Together with 1222006991, it forms a pair of twin primes.

1222006993 is a modest number, since divided by 6993 gives 1222 as remainder.

It is not a weakly prime, because it can be changed into another prime (1222006991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611003496 + 611003497.

It is an arithmetic number, because the mean of its divisors is an integer number (611003497).

Almost surely, 2^1222006993 is an apocalyptic number.

It is an amenable number.

1222006993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222006993 is an equidigital number, since it uses as much as digits as its factorization.

1222006993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 1222006993 is about 34957.2166083056. The cubic root of 1222006993 is about 1069.1153467581.

The spelling of 1222006993 in words is "one billion, two hundred twenty-two million, six thousand, nine hundred ninety-three".