1203042231221 has 2 divisors, whose sum is σ = 1203042231222. Its totient is φ = 1203042231220.

The previous prime is 1203042231133. The next prime is 1203042231253. The reversal of 1203042231221 is 1221322403021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1203000950596 + 41280625 = 1096814^2 + 6425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1203042231221 is a prime.

It is a super-2 number, since 2×1203042231221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203042231421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601521115610 + 601521115611.

It is an arithmetic number, because the mean of its divisors is an integer number (601521115611).

Almost surely, 2^{1203042231221} is an apocalyptic number.

It is an amenable number.

1203042231221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203042231221 is an equidigital number, since it uses as much as digits as its factorization.

1203042231221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1203042231221 its reverse (1221322403021), we get a palindrome (2424364634242).

The spelling of 1203042231221 in words is "one trillion, two hundred three billion, forty-two million, two hundred thirty-one thousand, two hundred twenty-one".