1222283889 has 12 divisors (see below), whose sum is σ = 1858443600. Its totient is φ = 771968664.

The previous prime is 1222283879. The next prime is 1222283893. The reversal of 1222283889 is 9883822221.

It is not a de Polignac number, because 1222283889 - 2⁵ = 1222283857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222283819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3573759 + ... + 3574100.

It is an arithmetic number, because the mean of its divisors is an integer number (154870300).

Almost surely, 2^1222283889 is an apocalyptic number.

1222283889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1222283889 is a deficient number, since it is larger than the sum of its proper divisors (636159711).

1222283889 is a wasteful number, since it uses less digits than its factorization.

1222283889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7147884 (or 7147881 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 1222283889 is about 34961.1768823648. The cubic root of 1222283889 is about 1069.1960913604.

The spelling of 1222283889 in words is "one billion, two hundred twenty-two million, two hundred eighty-three thousand, eight hundred eighty-nine".