1222509983 has 4 divisors (see below), whose sum is σ = 1222669560. Its totient is φ = 1222350408.

The previous prime is 1222509971. The next prime is 1222509991. The reversal of 1222509983 is 3899052221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3899052221 = 17 ⋅229356013.

It is a cyclic number.

It is not a de Polignac number, because 1222509983 - 2¹⁴ = 1222493599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222509983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222509383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67685 + ... + 83822.

It is an arithmetic number, because the mean of its divisors is an integer number (305667390).

Almost surely, 2^1222509983 is an apocalyptic number.

1222509983 is a deficient number, since it is larger than the sum of its proper divisors (159577).

1222509983 is an equidigital number, since it uses as much as digits as its factorization.

1222509983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159576.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1222509983 is about 34964.4102338363. The cubic root of 1222509983 is about 1069.2620127391.

The spelling of 1222509983 in words is "one billion, two hundred twenty-two million, five hundred nine thousand, nine hundred eighty-three".