1221232283 has 2 divisors, whose sum is σ = 1221232284. Its totient is φ = 1221232282.

The previous prime is 1221232241. The next prime is 1221232289. The reversal of 1221232283 is 3822321221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1221232283 - 2²² = 1217037979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221232289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610616141 + 610616142.

It is an arithmetic number, because the mean of its divisors is an integer number (610616142).

Almost surely, 2^1221232283 is an apocalyptic number.

1221232283 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221232283 is an equidigital number, since it uses as much as digits as its factorization.

1221232283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 1221232283 is about 34946.1340208041. The cubic root of 1221232283 is about 1068.8893716627.

The spelling of 1221232283 in words is "one billion, two hundred twenty-one million, two hundred thirty-two thousand, two hundred eighty-three".