1222201999 has 8 divisors (see below), whose sum is σ = 1287226880. Its totient is φ = 1157247000.

The previous prime is 1222201993. The next prime is 1222202077. The reversal of 1222201999 is 9991022221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222201999 - 2¹⁹ = 1221677711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222201993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20584 + ... + 53554.

It is an arithmetic number, because the mean of its divisors is an integer number (160903360).

Almost surely, 2^1222201999 is an apocalyptic number.

1222201999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1222201999 is a deficient number, since it is larger than the sum of its proper divisors (65024881).

1222201999 is a wasteful number, since it uses less digits than its factorization.

1222201999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34941.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1222201999 is about 34960.0057065213. The cubic root of 1222201999 is about 1069.1722129952.

The spelling of 1222201999 in words is "one billion, two hundred twenty-two million, two hundred one thousand, nine hundred ninety-nine".