1223222011 has 8 divisors (see below), whose sum is σ = 1342925424. Its totient is φ = 1104935520.

The previous prime is 1223221999. The next prime is 1223222023. The reversal of 1223222011 is 1102223221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1223221999) and next prime (1223222023).

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 1223222011 - 2²¹ = 1221124859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223222111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352420 + ... + 355873.

It is an arithmetic number, because the mean of its divisors is an integer number (167865678).

Almost surely, 2^1223222011 is an apocalyptic number.

1223222011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223222011 is a deficient number, since it is larger than the sum of its proper divisors (119703413).

1223222011 is a wasteful number, since it uses less digits than its factorization.

1223222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708461.

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

The square root of 1223222011 is about 34974.5909339909. The cubic root of 1223222011 is about 1069.4695629815.

Adding to 1223222011 its reverse (1102223221), we get a palindrome (2325445232).

It can be divided in two parts, 122322 and 2011, that multiplied together give a palindrome (245989542).

The spelling of 1223222011 in words is "one billion, two hundred twenty-three million, two hundred twenty-two thousand, eleven".