1203233221 has 2 divisors, whose sum is σ = 1203233222. Its totient is φ = 1203233220.

The previous prime is 1203233209. The next prime is 1203233243. The reversal of 1203233221 is 1223323021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 787644225 + 415588996 = 28065^2 + 20386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203233221 - 2²⁵ = 1169678789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203233621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601616610 + 601616611.

It is an arithmetic number, because the mean of its divisors is an integer number (601616611).

Almost surely, 2^1203233221 is an apocalyptic number.

It is an amenable number.

1203233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203233221 is an equidigital number, since it uses as much as digits as its factorization.

1203233221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1203233221 is about 34687.6522843504. The cubic root of 1203233221 is about 1063.6121049752.

Adding to 1203233221 its reverse (1223323021), we get a palindrome (2426556242).

The spelling of 1203233221 in words is "one billion, two hundred three million, two hundred thirty-three thousand, two hundred twenty-one".