1222312201 has 16 divisors (see below), whose sum is σ = 1349229888. Its totient is φ = 1098072000.

The previous prime is 1222312187. The next prime is 1222312277. The reversal of 1222312201 is 1022132221.

It is a happy number.

It is not a de Polignac number, because 1222312201 - 2⁹ = 1222311689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222312001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1007071 + ... + 1008283.

It is an arithmetic number, because the mean of its divisors is an integer number (84326868).

Almost surely, 2^1222312201 is an apocalyptic number.

1222312201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222312201 is a deficient number, since it is larger than the sum of its proper divisors (126917687).

1222312201 is a wasteful number, since it uses less digits than its factorization.

1222312201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1222312201 is about 34961.5817862979. The cubic root of 1222312201 is about 1069.2043466292.

Adding to 1222312201 its reverse (1022132221), we get a palindrome (2244444422).

The spelling of 1222312201 in words is "one billion, two hundred twenty-two million, three hundred twelve thousand, two hundred one".