1203221311129 has 2 divisors, whose sum is σ = 1203221311130. Its totient is φ = 1203221311128.

The previous prime is 1203221311063. The next prime is 1203221311139. The reversal of 1203221311129 is 9211131223021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132845179904 + 70376131225 = 1064352^2 + 265285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203221311129 - 2⁷ = 1203221311001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1203221311097 and 1203221311106.

It is not a weakly prime, because it can be changed into another prime (1203221311139) 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 as a sum of consecutive naturals, namely, 601610655564 + 601610655565.

It is an arithmetic number, because the mean of its divisors is an integer number (601610655565).

Almost surely, 2^{1203221311129} is an apocalyptic number.

It is an amenable number.

1203221311129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203221311129 is an equidigital number, since it uses as much as digits as its factorization.

1203221311129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 1203221311129 in words is "one trillion, two hundred three billion, two hundred twenty-one million, three hundred eleven thousand, one hundred twenty-nine".