1232220001 has 2 divisors, whose sum is σ = 1232220002. Its totient is φ = 1232220000.

The previous prime is 1232219999. The next prime is 1232220029. The reversal of 1232220001 is 1000222321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1224930001 + 7290000 = 34999^2 + 2700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232220001 - 2¹ = 1232219999 is a prime.

It is a super-2 number, since 2×1232220001² = 3036732261728880002, which contains 22 as substring.

Together with 1232219999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1232223001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616110000 + 616110001.

It is an arithmetic number, because the mean of its divisors is an integer number (616110001).

Almost surely, 2^1232220001 is an apocalyptic number.

It is an amenable number.

1232220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232220001 is an equidigital number, since it uses as much as digits as its factorization.

1232220001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1232220001 is about 35102.9913397705. The cubic root of 1232220001 is about 1072.0854894996.

Adding to 1232220001 its reverse (1000222321), we get a palindrome (2232442322).

It can be divided in two parts, 12322 and 20001, that added together give a palindrome (32323).

The spelling of 1232220001 in words is "one billion, two hundred thirty-two million, two hundred twenty thousand, one".