1222009969 has 2 divisors, whose sum is σ = 1222009970. Its totient is φ = 1222009968.

The previous prime is 1222009967. The next prime is 1222009979. The reversal of 1222009969 is 9699002221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1196122225 + 25887744 = 34585^2 + 5088^2 .

It is an emirp because it is prime and its reverse (9699002221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222009969 - 2¹ = 1222009967 is a prime.

It is a super-2 number, since 2×1222009969² = 2986616728670761922, which contains 22 as substring.

Together with 1222009967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1222009967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611004984 + 611004985.

It is an arithmetic number, because the mean of its divisors is an integer number (611004985).

Almost surely, 2^1222009969 is an apocalyptic number.

It is an amenable number.

1222009969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222009969 is an equidigital number, since it uses as much as digits as its factorization.

1222009969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1222009969 is about 34957.2591745978. The cubic root of 1222009969 is about 1069.1162146431.

The spelling of 1222009969 in words is "one billion, two hundred twenty-two million, nine thousand, nine hundred sixty-nine".